THOMASTON, Maine — A bomb threat shut down Georges Valley High School at about 11:30 a.m. Thursday.

According to Thomaston Police Chief Kevin Haj, a bomb threat was found written on the wall in a girls bathroom. All students were evacuated and then dismissed for the day.

Officers with the Thomaston Police Department, Maine State Police and the Knox County Sheriff’s Office searched the building and found nothing. Haj said police had no suspect as of Thursday afternoon.

School officials had not yet decided whether the school day would need to be made up.