An air gun was confiscated last year from the 14-year-old boy accused in a school shooting outside Bangkok that left several people dead, police said Sunday as the Thai government promised new safety protocols for schools and the total death toll rose to nine.

An unconfirmed number of people were killed when a student opened fire at a school in Thailand north of Bangkok on Friday, authorities said.

Seven people have died in a shooting in Thailand after a 14-year-old student opened fire at a school in Bangkok.

Police say 14-year-old student carried out attack before killing himself