got a pretty good idea of what happened. motive, though, is still unknown. joining me now is nbc news correspondent joe fryer who is in santa clarita. also with me, retired fbi special agent bobby chicon. joe, we thought the suspect is where you are. it turns out that he was found in the quad. >> yeah, and to be clear, there was a lot of confusing information. and remember, in the early stages after this shooting happened, out of precaution because authorities still had not figured out who the gunman was, they said the gunman was still on the loose. but we have now learned that the gunman is, in fact, in that initial group but still here at the gunman's house, authorities did come here because they wanted to make sure there were no other victims here. they say there were no other victims here but the police tape remains up here and they are going to be executing a search warrant here to see if they can find out any more information about why this happened. at this point, no clues about what the motivation might be. katy. >> joe fryer. joe, thank you very much.