US teenager who allegedly had six home-made bombs hidden in his bedroom planned school attack 'specifically modelled' on Columbine

A range of explosives were discovered comprising pipe bombs, Molotov cocktails, a Drano bomb and a napalm bomb

An Oregon high school student who allegedly had six home-made bombs hidden in his bedroom will be charged with attempted aggravated murder after being accused of planning an attack “specifically modelled” on the Columbine massacre.

Grant Acord, 17, was arrested at his home on Thursday and taken into a juvenile jail after police received a tip that he was planning to blow up West Albany High School.

Benton County District Attorney John Haroldson said the devices were found in the teenager's bedroom and that Acord planned to attack the school in a plot "forged and inspired" by the 1999 mass shooting at a school in Columbine, Colorado.

Fifteen people died in the Columbine school shooting when students, Eric Harris and Dylan Klebold, murdered twelve students and one teacher before turning guns on themselves.

Acord, who will be charged as an adult, faces six counts of manufacturing and possessing a destructive device, after investigators found the bombs in a secret compartment in his bedroom.

A range of explosives were discovered comprising pipe bombs, Molotov cocktails, a Drano bomb and a napalm bomb.

Acord will also face charges of attempted aggravated murder when they are formally filed on Tuesday morning.

District Attorney Haroldson said he was not aware that the youth had any major problems, such as a suspension, at school.

"I can't say enough about how lucky we are that there was an intervention," he told Associated Press.

"When I look at the evidence in the case, I shudder to think of what could have happened here."