Thailand teen shooter had BB gun

A 14-year-old boy who shot dead the grandparents who raised him before killing six others at his school in Thailand had watched violent videos online and once brought a BB gun to school, police said Sunday.

The teenage assailant shot his grandparents, using his grandfather's handgun, at their home north of Bangkok on Friday before going on a killing spree at his secondary school and ultimately turning the gun on himself, according to authorities.

A 12-year-old girl wounded in the school shooting died on Saturday, and five teachers and school staff were killed on Friday, police said.