14-year-old had cache of weapons

A teenager who felt bullied amassed a cache of guns, knives and explosive devices and tried to recruit another boy for a possible school attack, authorities said in Philadelphia.

The 14-year-old was taken into custody after police searched his bedroom in a Philadelphia suburb. He had talked about mounting a Columbine-type attack at Plymouth Whitemarsh High School, authorities said.

The weapons included a 9-millimeter assault rifle that the teenager’s mother had recently bought for him, Montgomery County Dist. Atty. Bruce L. Castor Jr. said. Prosecutors were reviewing her actions.