I can’t answer your other questions, but the campus police chief, at least I think that’s his title, said at the press conference last night that the police DID NOT think the first shooting was a murder suicide. What he did say is that they had identified a “person of interest” in that shooting, and were in fact interviewing this person at the time of the second shooting. The police chief was dancing very delicately around this whole issue, but it sounded to me like they thought they had their guy in the first shooting, but now it looks like they had the wrong guy. That’s not a criticism of the police. It just sounds to me like the most likely explanation.
I don't know if that report, or any particular report, is accurate yet. There is a lot of stuff circulating around, and until a day passes and major news articles are written, I'm not jumping to conclusions that anybody has all the facts.
I haven't decided to believe the "Cho" story either, as it seems driven by a blog. It could well be accurate, but I'll wait until the official reports name him.
As to Steger's comments, I heard him this morning and when he finally said they knew he was a student and did NOT live in AJ, the reporter asked what dorm he was in and Steger said he knew NOTHING else because he had JUST been handed a note with the information he gave.
So it's possible that 5 seconds earlier he didn't even know about the information. Things are being learned as we go.
I do expect that shortly they should be able to announce whether the bullets from the two shootings match or not. If they don't, it raises more questions, but still wouldn't PROVE it wasn't the same guy, just that he switched guns.