I have an user in a Facebook group who posted scam. I used the Facebook group option button to delete him, delete all his posts, deleting people he added, prohibiting him from re-entry, etc. but his posts remain there, and when I try to delete them, it says the posts are no longer there (but they still are). I believe this is a Facebook bug (and Facebook doesnt reply you, when you report bugs), in the past new members who wanted to avoid administrators ruling over them, they used to block the admin and it worked (the admin couldnt remove them) but that was fixable by adding a new admin the new user didnt block. Is there any workaround like this to delete this easy no deletable Facebook group posts?