CAIRNBROOK, Pa. (AP) — Authorities say a teenager has been arrested after an alleged threat of violence toward a Pennsylvania high school.

State police in Somerset County say "numerous" parents and grandparents contacted police on Friday about a possible threat to Shade Junior-Senior High School in Shade Township.

Police allege that a 17-year-old Stoystown youth said "he was going to shoot up the school and the people in it." A police statement lists the dates of the alleged threats as Monday to Friday last week during school hours.

The youth was arrested Sunday and placed in a juvenile detention facility. Police opened a terroristic threats investigation but didn't specify charges the youth may face.