Somerville police officers and federal ATF agents will not face any charges for shooting and killing a 21-year-old man after he opened fire on officers trying to arrest him on gun trafficking charges.
The Middlesex district attorney’s office said on Friday that Matthew Krister of Somerville bought eight handguns in New Hampshire in ten days and sold six firearms to gang members last October.
As authorities investigated the case, Krister told an ex-girlfriend that he would get into a shootout with police officers if they came looking for him.....