WARREN, Warren County — Three graduates have pleaded guilty to vandalizing a northwestern Pennsylvania high school and have agreed to pay for an estimated $700,000 in damage they caused.

The men pleaded guilty Thursday to burglary and criminal mischief for the June 16 break-in at Youngsville High School.

A sentencing date has not been set, but Duston Miller, 19, of Youngsville, Tylor Keyes, 18, of Grand Valley, and Derek Gifford, 20, of Greensburg agreed they will pay for the damage as part of whatever sentence they receive.

State police say the vandals emptied fire extinguishers in the gymnasium, cafeteria, computer lab, hallways and principal’s office and spray-painted crude pictures and the years they graduated on refrigerators, lockers, computer screens, chalkboards, doors, tables and walls.