I just watched a video, where a man breaks down shots from other videos to demonstrate what actually/probably happened. It shows that his gun was loaded...as they wrestled with him, one noticed his gun and shouted, “gun”, that’s when some drew their weapons. The man that disarmed him was moving away when the weapon went off (as that type weapon has a history of doing unintentionally) and it looks like they were keyed up and since it was within a second of the disarming, word hadn’t gotten around and it looks lie their response reaction was “contagious” gunfire, which is perfectly understandable under the conditions.
What is the make and model of the weapon?
Not only that, but the officers had no way to know that that was Pretti’s only weapon. I think they also saw Pretti reaching for his holster with something in his hand. It was his phone, but it would be difficult to know that in the chaos of the moment.
I will be dollars to donuts that the officer fingered the weapon and it did NOT go off by itself. Why would the gun suddenly go off (fire) by itself after all the other stuff the fellow did (jostling around)... He was carrying the gun the previous encounter when he kicked the ICE vehicle and the gun didn't go off.
The Air Force fellow that claimed the gun went off on it's own later was found guilty of lying and that his finger was on the trigger. Sig got a bad rap, and the videos of it going off had the trigger stagged to the wall before shaking them to fire. Any gun that is staged to the end of trigger pull will fire if shaken enough.
That said, I fully place the blame on the fellow shot (Alex) for putting himself in the position he did. His very actions ended up in this terrible situation, and his very death. If only he didn't interfere in rightful police business, he probable would still be alive. Stupid, stupid, stupid.