I'm hearing this kind of stuff a lot. As well as the "I wasn't there, so I don't know what happened" cop out (pun not intended)
Yes, it deserves investigating but looking at the cops narrative it becomes easy to see that it makes the most sense, it is also supported by the evidence, and it is also supported by the credible witnesses.
Only time will tell, but it looks very much to me like it was a legitimate shoot.
I agree from what has come out to date.