4 killed in Utah town shooting; juvenile arrested

A boy armed with a gun killed three children and a woman inside a Utah home, then accompanied the fifth victim to a hospital, where he was arrested, police said Saturday. Police were still trying to piece together the identity of the victims and the events leading up to Friday night's shooting in Grantsville.

Investigators believe the victims are all related to one another, and officials declined to release information about the shooter other than he was a juvenile male. It appears to be the largest mass shooting in Utah since 2007 when a shotgun-wielding gunman killed five people and himself at Trolley Square mall in Salt Lake City. It's also the first homicide in nearly 20 years in Grantsville, a town of 11,000 about 35 miles (56 kilometres) west of Salt Lake City.