Police in Pennsylvania have arrested a 20-year-old man accused of plotting a mass shooting at a high school later this month, one day after the anniversary of the Columbine massacre.

A caller from Tennessee tipped off authorities about the attack, which was allegedly planned for Evergreen Middle School.

A man planned to shoot up a Pennsylvania school to mark the anniversary of the Columbine massacre, but was thwarted by local police, authorities say. Braeden Phillips, 20, had planned to commit a ...

had planned to commit a mass shooting at State College High School in Central Pennsylvania on April 21, one day after the 26th anniversary of the deadly Columbine High School shooting, according ...

A central Pennsylvania man planned to shoot up a high school around the 26th anniversary of the Columbine shooting, authorities say. Braeden Phillips, 20, was arrested Friday night and remained ...

had planned to commit a mass shooting at State College High School in Central Pennsylvania on April 21, one day after the 26th anniversary of the deadly Columbine High School shooting, according ...