Matthew Nicholson

Matthew Nicholson, 29, is charged with two counts of murder and three counts of domestic violence. Nicholson is accused of killing his girlfriend's two teenage children during a domestic incident. Nicholson argued with his girlfriend before he shot her children Giselle Lopez, 19, and Manuel Lopez Jr., 17. The fight began after Nicholson became angry over text messages his girlfriend received from an ex-boyfriend, police said.