Drago said it was a combo CS-flashbang. Made intentionally...
I have never picked up a tear gas container or used one (you clearly know all this) but my understanding is they do not explode in the classic sense, but instead begin emitting a plume of gas.
These things are going to go off...when I heard that, I am not surprised the guy lost his hand. That was fully expected I would think.
Oops, bad grammar on my part I guess....not a “combo” CS/Flash bang...I meant that the police started using flash bangs in addition to the tear gas that they had been using previously. No such item as a “Combo CS-Flash Bang” I don’t think.