diff --git a/src/app/(modules)/ticket/[ticketId]/assign/components/AssignTicketForm.tsx b/src/app/(modules)/ticket/[ticketId]/assign/components/AssignTicketForm.tsx
index 9209a03..5facaf6 100644
--- a/src/app/(modules)/ticket/[ticketId]/assign/components/AssignTicketForm.tsx
+++ b/src/app/(modules)/ticket/[ticketId]/assign/components/AssignTicketForm.tsx
@@ -28,7 +28,6 @@ import {
 
 interface AssignTicketFormProps {
   ticketId: string;
-  videoId?: string;
   selectedClassNames: string[];
   startPoint: AssignmentRangePoint | null;
   endPoint: AssignmentRangePoint | null;
@@ -37,7 +36,6 @@ interface AssignTicketFormProps {
 
 export function AssignTicketForm({
   ticketId,
-  videoId,
   selectedClassNames,
   startPoint,
   endPoint,
@@ -49,7 +47,7 @@ export function AssignTicketForm({
   const [dueDate, setDueDate] = useState<Date>();
   const [assignNote, setAssignNote] = useState('');
 
-  const assignMutation = useAssignTicketMutation(ticketId, videoId);
+  const assignMutation = useAssignTicketMutation(ticketId);
   const today = useMemo(() => {
     const date = new Date();
     date.setHours(0, 0, 0, 0);
diff --git a/src/app/(modules)/ticket/[ticketId]/assign/components/AssignmentIssuesMap.tsx b/src/app/(modules)/ticket/[ticketId]/assign/components/AssignmentIssuesMap.tsx
index 7566bac..ce14820 100644
--- a/src/app/(modules)/ticket/[ticketId]/assign/components/AssignmentIssuesMap.tsx
+++ b/src/app/(modules)/ticket/[ticketId]/assign/components/AssignmentIssuesMap.tsx
@@ -5,7 +5,10 @@ import dynamic from 'next/dynamic';
 import { AlertTriangle, MapPinned, RefreshCw } from 'lucide-react';
 
 import { getDefectVisual } from '@/constants/defectVisualConfig';
-import type { DetectionResultItem, VideoDetectionsResponse } from '@/types';
+import type {
+  TicketAssignmentDetectionItem,
+  TicketAssignmentDetectionsResponse,
+} from '@/types';
 import { Button } from '@/components/ui/button';
 import {
   Card,
@@ -18,7 +21,7 @@ import {
 import type { AssignmentRangePoint } from './assignmentRange';
 
 type AssignmentIssuesMapProps = {
-  data?: VideoDetectionsResponse;
+  data?: TicketAssignmentDetectionsResponse;
   isLoading: boolean;
   isError: boolean;
   startPoint: AssignmentRangePoint | null;
@@ -32,7 +35,6 @@ type AssignmentMapItem = {
   display_name: string;
   latitude: number;
   longitude: number;
-  confidence: number;
   sequence: number;
 };
 
@@ -50,7 +52,10 @@ type ClientAssignmentIssuesMapProps = {
   onSelectDetection: (detectionId: number) => void;
 };
 
-function toMapItem(item: DetectionResultItem): AssignmentMapItem | null {
+function toMapItem(
+  item: TicketAssignmentDetectionItem,
+  sequence: number,
+): AssignmentMapItem | null {
   const { latitude, longitude } = item.location;
   if (
     typeof latitude !== 'number' ||
@@ -71,8 +76,7 @@ function toMapItem(item: DetectionResultItem): AssignmentMapItem | null {
     display_name: item.detection.display_name,
     latitude,
     longitude,
-    confidence: item.detection.confidence,
-    sequence: item.frame.timestamp_seconds,
+    sequence,
   };
 }
 
@@ -263,12 +267,6 @@ const ClientAssignmentIssuesMap = dynamic<ClientAssignmentIssuesMapProps>(
                     </div>
 
                     <dl className="!m-0 space-y-2 py-3 text-sm">
-                      <div className="flex items-center justify-between gap-4">
-                        <dt className="text-muted-foreground">Confidence</dt>
-                        <dd className="!m-0 font-medium tabular-nums">
-                          {Math.round(item.confidence * 100)}%
-                        </dd>
-                      </div>
                       <div className="flex items-center justify-between gap-4">
                         <dt className="text-muted-foreground">Latitude</dt>
                         <dd className="!m-0 font-mono text-xs tabular-nums">
@@ -321,8 +319,8 @@ export function AssignmentIssuesMap({
   );
   const validItems = useMemo(
     () =>
-      (data?.items ?? []).flatMap((item) => {
-        const mapItem = toMapItem(item);
+      (data?.items ?? []).flatMap((item, index) => {
+        const mapItem = toMapItem(item, index);
         return mapItem ? [mapItem] : [];
       }),
     [data?.items],
diff --git a/src/app/(modules)/ticket/[ticketId]/assign/components/ChooseIssuesSection.tsx b/src/app/(modules)/ticket/[ticketId]/assign/components/ChooseIssuesSection.tsx
index 7be4c15..588f482 100644
--- a/src/app/(modules)/ticket/[ticketId]/assign/components/ChooseIssuesSection.tsx
+++ b/src/app/(modules)/ticket/[ticketId]/assign/components/ChooseIssuesSection.tsx
@@ -7,9 +7,9 @@ import { MultiSelectPopover } from '@/components/form/MultiSelectPopover';
 import { Badge } from '@/components/ui/badge';
 import { Button } from '@/components/ui/button';
 import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
-import type { VideoDetectionsResponse } from '@/types';
+import type { TicketAssignmentDetectionsResponse } from '@/types';
 
-import { useTicketDetectionsQuery } from '../../../hooks/useTicketQueries';
+import { useTicketAssignmentDetectionsQuery } from '../../../hooks/useTicketQueries';
 import {
   formatCompactRangeCoordinate,
   formatRangeCoordinate,
@@ -28,7 +28,7 @@ interface IssueTypeOption {
 }
 
 interface ChooseIssuesSectionProps {
-  videoId?: string;
+  ticketId: string;
   issueTypes: IssueTypeOption[];
   selectedIssueTypes: string[];
   cacheRevision: number;
@@ -40,7 +40,7 @@ interface ChooseIssuesSectionProps {
 }
 
 export function ChooseIssuesSection({
-  videoId,
+  ticketId,
   issueTypes,
   selectedIssueTypes,
   cacheRevision,
@@ -101,22 +101,25 @@ export function ChooseIssuesSection({
 
   const queryParams = useMemo(
     () => ({
+      assignment_status: 'unassigned' as const,
       skip,
       limit,
       class_name:
         selectedIssueTypes.length > 0 ? selectedIssueTypes : undefined,
-      sort: 'timestamp_asc',
     }),
     [limit, selectedIssueTypes, skip],
   );
-  const detectionsQuery = useTicketDetectionsQuery(videoId, queryParams);
+  const detectionsQuery = useTicketAssignmentDetectionsQuery(
+    ticketId,
+    queryParams,
+  );
   const result = detectionsQuery.data;
   const mapCacheKey = useMemo(
-    () => JSON.stringify([videoId ?? '', selectedIssueTypes, cacheRevision]),
-    [cacheRevision, selectedIssueTypes, videoId],
+    () => JSON.stringify([ticketId, selectedIssueTypes, cacheRevision]),
+    [cacheRevision, selectedIssueTypes, ticketId],
   );
   const [mapCache, setMapCache] = useState<
-    Record<string, VideoDetectionsResponse>
+    Record<string, TicketAssignmentDetectionsResponse>
   >({});
 
   useEffect(() => {
diff --git a/src/app/(modules)/ticket/[ticketId]/assign/components/IssueColumns.tsx b/src/app/(modules)/ticket/[ticketId]/assign/components/IssueColumns.tsx
index c625a6b..2c66e83 100644
--- a/src/app/(modules)/ticket/[ticketId]/assign/components/IssueColumns.tsx
+++ b/src/app/(modules)/ticket/[ticketId]/assign/components/IssueColumns.tsx
@@ -5,17 +5,11 @@ import type { ColumnDef } from '@tanstack/react-table';
 
 import { Badge } from '@/components/ui/badge';
 import { getDefectVisual } from '@/constants/defectVisualConfig';
-import type { DetectionResultItem } from '@/types';
+import type { TicketAssignmentDetectionItem } from '@/types';
 
 import type { AssignmentRangePoint } from './assignmentRange';
 import { AssignmentRangeActions } from './AssignmentRangeActions';
 
-function formatTimestamp(seconds: number) {
-  const minutes = Math.floor(seconds / 60);
-  const remainingSeconds = Math.floor(seconds % 60);
-  return `${minutes}:${remainingSeconds.toString().padStart(2, '0')}`;
-}
-
 interface UseIssueColumnsOptions {
   startPoint: AssignmentRangePoint | null;
   endPoint: AssignmentRangePoint | null;
@@ -28,7 +22,7 @@ export function useIssueColumns({
   endPoint,
   onSetStart,
   onSetEnd,
-}: UseIssueColumnsOptions): ColumnDef<DetectionResultItem>[] {
+}: UseIssueColumnsOptions): ColumnDef<TicketAssignmentDetectionItem>[] {
   return useMemo(
     () => [
       {
@@ -89,13 +83,6 @@ export function useIssueColumns({
           );
         },
       },
-      {
-        id: 'timestamp',
-        header: 'Timestamp',
-        size: 130,
-        cell: ({ row }) =>
-          formatTimestamp(row.original.frame.timestamp_seconds),
-      },
       {
         id: 'range_actions',
         header: 'Set range',
diff --git a/src/app/(modules)/ticket/[ticketId]/assign/components/IssueTable.tsx b/src/app/(modules)/ticket/[ticketId]/assign/components/IssueTable.tsx
index 3920e01..011cd1a 100644
--- a/src/app/(modules)/ticket/[ticketId]/assign/components/IssueTable.tsx
+++ b/src/app/(modules)/ticket/[ticketId]/assign/components/IssueTable.tsx
@@ -4,11 +4,11 @@ import type { ReactNode } from 'react';
 import type { ColumnDef } from '@tanstack/react-table';
 
 import { DataTable } from '@/components/data-table';
-import type { DetectionResultItem } from '@/types';
+import type { TicketAssignmentDetectionItem } from '@/types';
 
 interface IssueTableProps {
-  columns: ColumnDef<DetectionResultItem>[];
-  issues: DetectionResultItem[];
+  columns: ColumnDef<TicketAssignmentDetectionItem>[];
+  issues: TicketAssignmentDetectionItem[];
   isLoading: boolean;
   isError: boolean;
   toolbar: ReactNode;
diff --git a/src/app/(modules)/ticket/[ticketId]/assign/page.tsx b/src/app/(modules)/ticket/[ticketId]/assign/page.tsx
index 03af3c3..6e44fdb 100644
--- a/src/app/(modules)/ticket/[ticketId]/assign/page.tsx
+++ b/src/app/(modules)/ticket/[ticketId]/assign/page.tsx
@@ -45,7 +45,6 @@ export default function TicketAssignmentPage() {
   const [assignmentRevision, setAssignmentRevision] = useState(0);
   const overviewQuery = useTicketOverviewQuery(ticketId);
   const overview = overviewQuery.data;
-  const videoId = overview?.video_id ?? overview?.video?.id ?? undefined;
   const ticketDetailUrl = ROUTES.TICKET_DETAIL(ticketId);
   const backToTicket = () => router.push(ticketDetailUrl);
 
@@ -107,7 +106,7 @@ export default function TicketAssignmentPage() {
       <div className="grid min-w-0 items-start gap-5 xl:min-h-0 xl:flex-1 xl:grid-cols-[minmax(0,1fr)_360px] xl:items-stretch xl:overflow-hidden">
         <div className="min-w-0 xl:h-full xl:min-h-0 xl:overflow-y-auto xl:overscroll-contain xl:pr-2">
           <ChooseIssuesSection
-            videoId={videoId}
+            ticketId={ticketId}
             issueTypes={overview.ai_result.detections_by_class}
             selectedIssueTypes={selectedIssueTypes}
             cacheRevision={assignmentRevision}
@@ -146,7 +145,6 @@ export default function TicketAssignmentPage() {
           >
             <AssignTicketForm
               ticketId={ticketId}
-              videoId={videoId}
               selectedClassNames={selectedIssueTypes}
               startPoint={startPoint}
               endPoint={endPoint}
diff --git a/src/app/(modules)/ticket/hooks/useTicketQueries.ts b/src/app/(modules)/ticket/hooks/useTicketQueries.ts
index 3aea994..e1d5cdc 100644
--- a/src/app/(modules)/ticket/hooks/useTicketQueries.ts
+++ b/src/app/(modules)/ticket/hooks/useTicketQueries.ts
@@ -17,6 +17,7 @@ import type {
   RequestTicketExtensionPayload,
   ReviewDetectionRepairProofPayload,
   TicketAssignmentSummary,
+  TicketAssignmentDetectionsParams,
   TicketListParams,
   DetectionProofStatus,
   VideoDetectionsParams,
@@ -136,6 +137,32 @@ export function useTicketClassDetectionsQuery(
   return useTicketDetectionsQuery(videoId, params);
 }
 
+export function useTicketAssignmentDetectionsQuery(
+  ticketId: string | undefined,
+  params: TicketAssignmentDetectionsParams,
+) {
+  const queryParams = useMemo(
+    () => ({
+      assignment_status: params.assignment_status ?? 'unassigned',
+      class_name: params.class_name,
+      skip: params.skip ?? 0,
+      limit: params.limit ?? 500,
+    }),
+    [params.assignment_status, params.class_name, params.limit, params.skip],
+  );
+
+  return useQuery({
+    queryKey: ticketKeys.assignmentDetections(ticketId ?? '', queryParams),
+    queryFn: () =>
+      ticketService.getTicketAssignmentDetections(
+        ticketId as string,
+        queryParams,
+      ),
+    enabled: Boolean(ticketId),
+    staleTime: Infinity,
+  });
+}
+
 export function useTicketReviewDetectionsQuery(
   videoId: string | undefined,
   proofStatus?: DetectionProofStatus,
@@ -262,7 +289,7 @@ export function useAssignableTicketUsersQuery(enabled: boolean) {
   });
 }
 
-export function useAssignTicketMutation(ticketId: string, videoId?: string) {
+export function useAssignTicketMutation(ticketId: string) {
   const queryClient = useQueryClient();
 
   return useMutation({
@@ -278,13 +305,12 @@ export function useAssignTicketMutation(ticketId: string, videoId?: string) {
           queryKey: ticketKeys.timeline(ticketId),
         }),
         queryClient.invalidateQueries({ queryKey: ticketKeys.lists() }),
-        ...(videoId
-          ? [
-              queryClient.invalidateQueries({
-                queryKey: ticketKeys.classDetectionLists(videoId),
-              }),
-            ]
-          : []),
+        queryClient.invalidateQueries({
+          queryKey: ticketKeys.assignmentDetectionLists(ticketId),
+        }),
+        queryClient.invalidateQueries({
+          queryKey: ticketKeys.assignments(ticketId),
+        }),
       ]);
     },
     onError: () => toast.error('Failed to assign ticket'),
diff --git a/src/app/(modules)/ticket/queries/ticketKeys.ts b/src/app/(modules)/ticket/queries/ticketKeys.ts
index c0e1715..4590fc7 100644
--- a/src/app/(modules)/ticket/queries/ticketKeys.ts
+++ b/src/app/(modules)/ticket/queries/ticketKeys.ts
@@ -1,4 +1,8 @@
-import type { TicketListParams, VideoDetectionsParams } from '@/types';
+import type {
+  TicketAssignmentDetectionsParams,
+  TicketListParams,
+  VideoDetectionsParams,
+} from '@/types';
 
 export const ticketKeys = {
   all: ['tickets'] as const,
@@ -19,6 +23,12 @@ export const ticketKeys = {
       'review',
       proofStatus ?? 'all',
     ] as const,
+  assignmentDetectionLists: (ticketId: string) =>
+    [...ticketKeys.details(), ticketId, 'assignment-detections'] as const,
+  assignmentDetections: (
+    ticketId: string,
+    params: TicketAssignmentDetectionsParams,
+  ) => [...ticketKeys.assignmentDetectionLists(ticketId), params] as const,
   assignments: (ticketId: string) =>
     [...ticketKeys.details(), ticketId, 'assignments'] as const,
   extensionRequest: (ticketId: string, assignmentId: number | undefined) =>
diff --git a/src/constants/apiRoutes.ts b/src/constants/apiRoutes.ts
index c2f1685..7fbaaed 100644
--- a/src/constants/apiRoutes.ts
+++ b/src/constants/apiRoutes.ts
@@ -64,6 +64,8 @@ export const API_ROUTES = {
   TICKETS: {
     BASE: '/biz/api/v1/tickets',
     DETAIL: (id: string) => `/biz/api/v1/tickets/${id}`,
+    ASSIGNMENT_DETECTIONS: (id: string) =>
+      `/biz/api/v1/tickets/${id}/assignment-detections`,
     TIMELINE: (id: string) => `/biz/api/v1/tickets/${id}/timeline`,
     ASSIGNMENTS: (id: string) => `/biz/api/v1/tickets/${id}/assignments`,
     REQUEST_EXTENSION: (ticketId: string, assignmentId: number) =>
diff --git a/src/services/api/ticket.service.ts b/src/services/api/ticket.service.ts
index c17acec..e9df4b2 100644
--- a/src/services/api/ticket.service.ts
+++ b/src/services/api/ticket.service.ts
@@ -9,6 +9,8 @@ import type {
   ReviewTicketExtensionPayload,
   SseTokenResponse,
   TicketAssignmentSummary,
+  TicketAssignmentDetectionsParams,
+  TicketAssignmentDetectionsResponse,
   TicketAssignmentsResponse,
   TicketExtensionRequestsResponse,
   TicketExtensionRequestsParams,
@@ -52,6 +54,27 @@ export const ticketService = {
     return response.data;
   },
 
+  getTicketAssignmentDetections: async (
+    ticketId: string,
+    params?: TicketAssignmentDetectionsParams,
+  ): Promise<TicketAssignmentDetectionsResponse> => {
+    const response = await axiosClient.get<TicketAssignmentDetectionsResponse>(
+      API_ROUTES.TICKETS.ASSIGNMENT_DETECTIONS(ticketId),
+      {
+        params: {
+          assignment_status: params?.assignment_status ?? 'unassigned',
+          class_name: params?.class_name,
+          skip: params?.skip ?? 0,
+          limit: params?.limit ?? 500,
+        },
+        paramsSerializer: {
+          indexes: null,
+        },
+      },
+    );
+    return response.data;
+  },
+
   getTicketTimeline: async (
     ticketId: string,
   ): Promise<TicketTimelineResponse> => {
diff --git a/src/types/detection.ts b/src/types/detection.ts
index aef1644..712a64c 100644
--- a/src/types/detection.ts
+++ b/src/types/detection.ts
@@ -104,6 +104,37 @@ export type VideoDetectionsResponse = {
   items: DetectionResultItem[];
 };
 
+export type AssignmentDetectionStatus = 'assigned' | 'unassigned';
+
+export type TicketAssignmentDetectionsParams = {
+  assignment_status?: AssignmentDetectionStatus;
+  class_name?: string | string[];
+  skip?: number;
+  limit?: number;
+};
+
+export type TicketAssignmentDetectionItem = {
+  id: string;
+  detection: {
+    id: number;
+    class_name: string;
+    display_name: string;
+  };
+  location: {
+    latitude: number;
+    longitude: number;
+  };
+};
+
+export type TicketAssignmentDetectionsResponse = {
+  ticket_id: string;
+  assignment_status: AssignmentDetectionStatus;
+  items: TicketAssignmentDetectionItem[];
+  total: number;
+  skip: number;
+  limit: number;
+};
+
 export type DetectionDiscardReason =
   | 'not_a_defect'
   | 'wrong_class'