Kansas High School and Middle Schools were evacuated today just before lunchtime after the high school received a bomb threat, according to school officials.

Two notes were reportedly found in two of the boys’ restrooms at the high school around 11:30 a.m.

Both notes, which were written on the same type of paper and in the same handwriting, allegedly said there would be a bomb at the high school on September 1.

Students were evacuated from the buildings in under an hour, officials said.

Kansas Police Department, Kansas Fire and Rescue and the Delaware County Sheriff’s Department all responded to the call, and Sheriff’s Captain Ron Teel brought the department’s bomb sniffing dog, “Major.”

Officials noted that everything went smoothly and emergency workers arrived at the scene immediately.

As of 3:00 p.m., Teel and “Major” were sweeping the last building for explosives and none had been discovered.

Making a bomb threat to a school is considered to be a felony act of terrorism.

“We will aggressively find who has done this,” said Kansas Superintendent Leann Barnwell, adding that the culprits would be held accountable for their actions.