Teen admits planning attack on high school

A 14-year-old admitted to authorities in Norristown that he planned a Columbine-style attack on a high school, which could keep him in juvenile custody for as long as 6 1/2 years.

Dillon Cossey’s admission came about two weeks after authorities searched his Plymouth Township home and found a 9-millimeter rifle, about 30 air guns modeled to look like high-powered weapons, swords, knives, a bomb-making book, videos of the 1999 Columbine attack in Colorado and violence-filled notebooks.

Cossey, who was home-schooled, admitted to three felonies -- criminal solicitation, risking a catastrophe and possession of an instrument of crime -- in Montgomery County juvenile court.