Angular CdkDragDrop - Identify destination component on drop event

draging from parent componenet to some child componenet (of multiple same type childs) i am using (cdkDropListDropped)="drop($event)" to point :

  drop(event: CdkDragDrop<string[]>) {
    console.log(event);// how can i get the instance of target component
    }

<app-parent>
<div cdkDropList [cdkDropListData]="Data" (cdkDropListDropped)="drop($event)"></div>
<app-child cdkDropList></app-child> 
<app-child cdkDropList></app-child> 
<app-child cdkDropList></app-child> 
</app-parent>

but i cant obtain from event the target component;