NEBRASKA -- A post made to a Nebraska-based mental health app has put multiple school districts across the state on high alert. 

Parents in multiple school districts including Omaha, Lincoln and Norfolk Public Schools, among others, received notifications from district officials overnight regarding a post on the Nebraska Safe2Help app. 

The post warned individuals to stay home from school Thursday because of threat to safety. 

But the message didn't contain any specific information related to any school districts. 

In a message didn't contain any specific information related to any school districts.

In a message sent to parents late Wednesday, Norfolk Public School Principal Jason Settles said police investigated the threat and found there was no viable threat to student safety. 

Settles said multiple agencies across the state are investigating the post.

It follows what district officials said was a threat of violence at Columbus Middle School earlier this week, and a shooting at Omaha Northwest High School on Tuesday.

Safe2Help is an app designed by the state of Nebraska to allow students, staff and parents to report concerning behavior anonymously.