A search of Preble-Shawnee Junior/Senior High School on Tuesday, after a reported bomb threat, turned up nothing, the district superintendent said Tuesday night.

“There was no bomb,” Superintendent Dale Robertson said.

Classes on Wednesday will be held according to normal schedules, he said.

Robertson declined comment when asked whether he knew or was told who might be behind the threat.

According to Robertson, the district received information near the end of the school day Tuesday that there would be a bomb in the building on Wednesday. He said the district immediately called the Preble County Sheriff’s Office, which sent deputies to the building at 5495 Somers-Gratis Road to check it, and canceled all activities at the building scheduled for Tuesday night.

The threat directed at the school is the second today in the Miami Valley that has prompted authorities to take action.

In Franklin, district Superintendent Arnol Elam said extra security would be implemented Friday after rumors of violence circulated through the school last week.

Elam said a rumor was going through the school that two male students were going to come and “do some violent acts.” School officials and sheriff’s deputies interviewed high school students last week and no student could substantiate that they heard the threat.

The district decided to add extra security precautions on Friday in light of the shooting at an elementary school in Newtown, Conn., where 26 people — including 20 children — were killed.