The Los Angeles County District Attorney announced murder charges on Tuesday against a 19-year-old man who broke into a Lancaster home earlier this month and shot four people in their sleep. Miguel Diego Sandoval allegedly shot 23-year-old Matthew Montebello, 29-year-old Christine Aca-ac, her 24-year-old brother Janvi Maquindang, and 24-year-old Edwin Garcia then set fire to …