Furthermore, besides the fact that nobody knows how John arrived to the hospital, sources told TMZ that hospital staff told family members John just sort of appeared “out of nowhere” in a wheelchair. And that he wasn’t too lucid.
Breitbart
So, since everything looks so suspicious, his children want to know what happened. They want to know what he was doing beforehand, who he was communicating with, and whether someone knew he was in bad shape and could have done something sooner to help him.