I think that first idiot took it center-mass, wasn't a lot of blood splattering behind him, which makes sense if the shooter was using good HP's in gun the expanding ball would have tore him up plenty...dropped him right there, he was probably dead before he hit the floor.
It's hard to tell just from a pic, but the reaction looks more center-mass impact too.
No other news on this, links don't reveal much...I'm guessing 9mm...would like more details on weapon, rounds and the impact. Propbably because people like us want to know and because they don't want to upset the dead perps kin is why nothing else is being reported...that and God-forbid the D-MC ever give us full details on a just shooting!