A threat was found written in one of the bathrooms at Holland Woods Middle School Tuesday.

The school resource officer and the Port Huron Police Department responded. The district also sent out a message to parents.

"In cooperation with the Port Huron Police Department it has been determined that we will close Holland Woods Middle School for the day while the investigation continues, and the building is searched. Additional police are on site, students are safe and we are asking families in an abundance of caution to come and pick up their student(s). Bring ID to main office. We will have busses to get students not picked up home and will announce those times soon."

Classes for Holland Woods Middle School will resume tomorrow. Out of an abundance of caution, the Port Huron Police Department will have officers stationed at the school throughout the day.

Assistant Chief Brian Kerrigan said parents should take the opportunity to talk with their children about these types of threats and the consequences it could have should the student choose to make one.

Kerrigan said that if students have any information on the threat, they should report it to Okay to Say, Tip 411 or the CAPTURE hotline. The number is (810) 987-6688.

St. Clair County Sheriff deputies and detectives responded to Fort Gratiot Middle School April 27 after a threat was discovered in a bathroom. The person who made the threat was identified as a female student at the middle school. Possible charges are unknown at this time.

Contact McKenna Golat at mgolat@gannett.com or (810) 292-0122.

This article originally appeared on Port Huron Times Herald: Threat found at Holland Woods Middle School