Board Thread:Naruto Discussions/@comment-9782468-20151224201414/@comment-25319479-20151224202856

Half of Obito's body got crushed, so i would imagine Konoha thought that his sharingan got destroyed in the process. And the incident happen in enemy territory during a world war, so it would of been a waste of resource to attempt to recover his body when either his sharingan had already been looted or been destroyed.