Can you find out the IP address of a Fb message?

Me and my four friends have a four way chat on fb and one of my friends was saying all this stuff but we found out it wasn't her on her account, we clicked on the message to c if it had a location because sometimes on iphones you can enable location services, and it only said 'sent from messenger so over someone's phone, she wants to go to the cops will they be able to get an IP address on the message, plus the message were deleted off her account only us three girls can see them and she also got out of other sessions on her fb which i thought was dumb because the police could've used it. But yeah i just want to know because i don't think you can:/

Even the cops would need a warrant to locate the IP of that user and unless they have a valid reason, the judge would never sign off on the warrant.

Abhi is correct. The only way you could get their IP is to trick them into clicking a link which you have access over the views of the said link. Even then they could be using a VPN, which would lead you no where.

You can't get the IP address and even if you could it would not help you. Plus what to you think the police are going to do. Thousands of people get scammed each day off the internet and the police don't do anything and that's with money being stolen. They don't even look at something like a facebook hack.