ST. JOSEPH, Mich. -- The lockdown at Constantine Public Schools has been lifted, according to a Constantine Schools Schools Superintendent Steve Wilson.

All schools in the district were placed on inside threat lockdown around noon because of an incident at the high school

Around 12:30 all buildings went on outside threat lockdown except the high school.

As of 1:25 p.m., all lockdowns were lifted.

Students and staff are all safe, Superintendent Wilson said.

Wilson said no weapons were found on campus.

The lockdown was a result of social media threats made by a student.

Wilson added, "We understand that times like this are very stressful and frightening and we appreciate the diligence that our staff and students showed during this time and appreciate our community support in keeping our kids safe."