Had not heard this.
I have watched several videos filtered by 4chan so I wouldn’t have to waste time for hours on irrelevant ones. In the cab driver video she is out of the area by about 10 minutes or so and so you don’t hear anymore. I haven’t been able to find a continuous, long video. But that stuck in my mind when I heard the cop say he hadn’t heard a shot for about 15 minutes. It would explain why there are videos of people just walking around while there are still a bunch of folks there. Seems to me 40 minutes of intermittent firing would allow just about everyone that could to get out.
I don’t know if it means anything but it could mean he had a partner who whacked him and split. Although I doubt it because the police radio said that they were in the hall on floor 32 with the security guard that got shot by 6 minutes in or so. So I don’t think anyone got out of that room after about the 6 minute mark and there was clearly more firing after 6 minutes.
It may be that there was just one shooter and he shot himself some ten minutes or so after he shot the security guard because he knew there were cops in the hall. And he may just have done it because he was a psychopath and it wasn’t a rap festival in Vegas. (Just imagine if it had been.)