Authorities have identified the man sought in a Montgomery County killing spree that left six people dead and one person wounded. Bradley William Stone, 35, of Pennsburg, Pa., remains at large. All of the victims had a ‘familial’ relationship with Stone. Officials are telling Pennsburg, Pennsylvania, residents to stay in their homes and lock their doors as police search for Stone. He maybe wearing military fatigues and should be considered armed and dangerous, according to the Montgomery County District Attorney’s Office . Stone is known to use a cane or walker.