School bus vandalism has cancelled class at Windham Public Schools today. School Superintendent Ana Ortiz says the vandalism was discovered this morning at the M & J bus yard in Windham.

“We received a call close to six this morning that the buses had been vandalized,” Ortiz said. “We got a call from the manager of the garage. My understanding was mud put into tanks and also some water into some of the buses.”

State police are investigating. Ortiz hopes classes can resume as normal Thursday, but isn’t sure. She says surrounding towns are helping with bus aid.