KENNEBUNK – A bomb threat at the Middle School of the Kennebunks forced officials to evacuate the building Tuesday morning.

Andrew Dolloff, superintendent of Regional School Unit 21, e-mailed a notice to parents about the situation Tuesday afternoon.

Dolloff said writing found on a wall in one of the girls’ bathrooms caused an immediate evacuation. All students were moved to Kennebunk High School while a pair of state police dogs searched the building, Dolloff said. No bombs were found.

The school remained closed for the day, but will reopen today.

“I assure you that we will continue to respond to threats such as this with a sense of seriousness. Although we will evacuate the building, we will not dismiss students for the remainder of the day as I believe that sends the wrong message,” Dolloff wrote in his notification to parents.