Delaware Hayes High School will be closed Thursday after school officials were made aware of a threat to the school.

Delaware City Schools Superintendent Paul Craft said Wednesday evening that the district learned that a threat had been made against the school at the end of the day Wednesday. Upon learning of the threat, the district immediately started an investigation and contacted the City of Delaware Police Department.

Craft said the police department had a suspect in custody Wednesday evening, but out of concern for safety, Hayes will be closed Thursday. Craft said the district will decide Thursday if Hayes will be open on Friday.

Craft added that Hayes will be only school that is closed. All other schools in the district will be open on normal schedules Thursday.

Craft said the district’s investigation is still ongoing.

City of Delaware Police Capt. Adam Moore said Wednesday evening that a student was in custody, and while they had not been charged Wednesday evening, charges are likely.

Moore said the investigation is ongoing, and the situation is fluid.

“We are diligently working to determine if the issue goes beyond the person in custody,” Moore said in an email Wednesday evening.

The district added that if anyone has information about this situation or any threat against schools in the district, please contact Delaware PD at 740-203-1112.

The district reported there will be additional security throughout the district Thursday.