how can I permanently delete a facebook message?

[AzzieNikole]

I know how to delete MY copy of the message. when I try to delete the message it says "This will delete your copy of the message" but I want BOTH copies gone! How do I do this??

[Justin]

dlete
conversation
and not just
the message

[Brandon N]

The recipient of the message has to be the one to delete the other copy of the message. This is for legal issues. For instance, if while angry, you threatened someone with a message but tried to delete it and claim you didn't...they have physically proof you did.