I think you are right. The demeanor of the media report on Channel 5 and the reporter on Channel 4 saying the FBI was tight lipped speaks volumes.
Have heard all day they are sitting on info that no one will give them an "on the record" confirmation. No suicide note so they speculated it was an accident or suicide.
The President seemed to be unusually tense and serious on Friday when he introduced John Roberts. He went through the motions of telling a joke about Roberts' son Jack, but he did not seem to enjoy telling the joke the way he usually does.