Of course.
Then again, it's all over the news, so if there are any other bad guys, or co-conspirators involved, they've already headed for the tall grass. LE knows this too. Still seems a little odd that this much time could transpire, yet still on ID on toxic boy.
I would say there are a couple of reasons they didn’t ID him.
They don’t want, as you said, people fleeing... (but likely it’s too late on that) and my cop friends here tell me that they already know who the clown is. (They being the local authorities, not the guys I’m talking to.)
The other reason is.... they really do NOT want to panic the public because, against the odds of “Mohammad” being the name, it quite possibly IS something along those lines.
The “relative” came to gather his belongings and was caught unawares, and not willing at first to believe what he saw (supposition on my part) and turned in the stuff he found on the off chance that it was what made his friend/relative sick... and it turned out to be right.
So... if they give out the information on the really sick guy, then the public can reach the relative. Thus, they will get way more information than the authorities want released (at this time, or even EVER).