(CNN) -- A Washington state middle school boy was arrested after he brought 400 rounds of ammunition, multiple knives and a handgun to his school, intending to shoot another student who he thought was bullying his friend, police said. The school and adjacent Pioneer Elementary School were put into lockdown Wednesday about 9:20 a.m. for two hours. The incident comes on the heels of several school-related violent incidents around the nation. The 11-year-old was booked into a juvenile detention facility Wednesday after the incident that caused the lockdown of Frontier Middle School, Vancouver Police said. While middle school students were sent home with a letter outlining the incident, elementary school students did not get a letter because they were on an early release schedule, Fay said.
– A pretty jarring story out of Washington state, where an 11-year-old boy was last night arrested and faces an attempted murder charge following the police discovery of a handgun, more than 400 rounds of ammunition, and several knives at a Vancouver, Wash., middle school. No one was hurt in the incident, which prompted a two-hour lockdown at the middle school and an elementary school next door yesterday morning, the Columbian reports. The boy has been placed in juvenile detention, CNN reports.