Northville High School announced plans to remain open Wednesday, Nov. 11, with additional police officers and support services after a threatening phone call prompted a lockdown Tuesday.

Superintendent RJ Webber and Northville Township Police Chief Scott Hilden said Tuesday evening that all students and staff across the district were safe, according to their joint update.

The school received the call at approximately 12:24 p.m. Nov. 10. Officials said police initially considered the threat likely not credible but searched the building and grounds with police dogs as a precaution.

Neighboring agencies assisted with the response, and Six Mile Road was temporarily closed, according to the township’s incident notice.

Students left the school in stages after police cleared the parking lot and authorized movement. They were instructed to leave backpacks behind and take their phones while officers continued checking the building.

Ridge Wood Elementary held recess indoors but otherwise continued its academic schedule. Other elementary schools, middle schools and Cooke programs followed their regular dismissal schedules, officials said.

During the lockdown, parents were directed to Ward Church at 40000 Six Mile Road rather than the high school. The township emphasized at the time that students remained at school and were not being taken to the church.

Officials said Tuesday evening that the threatening call remained under investigation. Anyone with information can contact Northville Township police at 248-349-9400.