Millcreek Township, Erie County (WJET/WFXP/ — An alleged threat written on a bathroom stall at McDowell Intermediate High School (MIHS) was being investigated Friday, and the high school buildings will have increased security Monday in response.

The Millcreek Township School District sent a notification to parents on Friday, Sept. 22, to make parents aware of a reported threat written on a bathroom stall at MIHS. The threat of violence was made known to MIHS school officials through Safe2Say, an anonymous PA school safety reporting system.

MTSD security officers and Millcreek Police investigated the threat and determined there was “no concrete evidence to suggest the threat is credible.”

In a statement issued to staff and parents, the school district said in part:

“Students have returned to classes as usual this morning at McDowell Intermediate High School. There was an increase in security officers and local police as an extra safety precaution.”