Facebook name listed in black, on message.?

[Nata]

I was currently looking through my messages and I came across a name, which was listed in black and I wasn't able to click it or it wasn't "clickable", but I was able to their profile picture. what could the problem be?

[?]

This person has either temporarily deactivated their account or blocked you. Try searching for that person on Google or on Facebook people search while logged out, if nothing comes out, acvount has most likely been deactivated, however it can easly be set in Facebook's privacy settings, though, there is a trick: Go to messages, click to view messages with that person, go to options and choose to report a message, go to the last, bottom option "Report for Harassment" and if it comes out with option to block, this person has probably deactivated their acvount temporarily, while if it says "Blocked" that person has blocked you, but due to Facebook messaging changes, we can't be dure, could be permanent account removal, in which case after a while, person will turn to "Facebook User" and their profile picture to default. Try going to your friend's house and looking that person up from their account.