An 11-year-old boy in Vancouver, Washington was arrested Wednesday after he allegedly took a gun and ammunition to his middle school.

According to The Columbian, the boy, Quincy Tuttle, claimed that a “voice in his head” was telling him to kill another student, also 11, “for calling his friend … 'gay.'”

Police said that Tuttle, who remains in custody, was found with a gun, knives and more than 400 rounds of ammunition at the school.

School officials were alerted by the boy's mother, who called to tell them that her son had taken some kitchen knives.

Police said that Tuttle intended to shoot his target “in the arm and then shoot himself in the head.”

Evergreen Public Schools spokesman Kris Fay said that Tuttle “has not been on the radar for this.”

The school, Frontier Middle School, reopened after a two-hour lockdown.