Nick Reiner 'almost childlike in jail' after parents' alleged murders, Fox Nation documentary reveals

A new "TMZ Investigates" special on Fox Nation claims Nick Reiner is in no mental state to stand trial for the alleged murders of his parents, Rob and Michele Reiner, as the program reveals new details about his mental state, medication changes and the case against him.

"He is not competent to stand trial right now. He is almost childlike in jail, we're told," TMZ executive producer Harvey Levin told "Fox & Friends" on Monday. 

"He can't process the consequences of what he's done.