NM Cops Arrest Boy in Shooting Deaths of 5 Multiple weapons found on scene; motive unknown By Newser Editors and Wire Services Posted Jan 20, 2013 11:51 AM CST 215 comments Comments A 15-year-old New Mexico boy has been arrested in the murders of two adults and three children. (Shutterstock) (Newser) – Authorities in New Mexico say a 15-year-old boy has fatally shot two adults and three children inside an Albuquerque home. The boy has been booked on murder and other charges. A Bernalillo County sheriff's spokesman says the boy's motive and connection to the five victims are unknown; KOB TV reports that they were a man, woman, two girls, and a boy. Multiple weapons, including an assault rifle, were reportedly found on the scene, and the victims had several gunshot wounds. Investigators who received a report of the shooting last night are trying to determine whether the victims were related. The victims' identities haven't been released.