Mentor Police and school officials began investigating a gun rumor at Shore Middle School just a few hours after they declared Ridge Middle School safe from a bomb threat.

According to the district's website, a phone notification system began contacting parents around 6 p.m. Thursday evening with a message from Shore Principal Doug Baker. Here is the text of the message:

We have been made aware by students and parents that there are some rumors circulating around social media that claim a student made a threat about bringing a gun to school. The Mentor Police department is investigating right now and working to track down this rumor. As of right now, there have been no credible leads in tracking down where this rumor originated. As a precaution, the Mentor Police Department will have a presence at Shore tomorrow. If there are any updates, we will be sure to get them out to you as soon as we can.

The Shore rumor marks the fourth threat of a gun or bomb at a Mentor School in one week. On Tuesday, a student who is suspected of writing a threat on the wall at Memorial Middle School and causing the bomb scare was arrested and charged with inducing panic.

On February 14, police questioned students at Ridge Middle School in an attempt to find the origin of a rumor that a student would bring a gun to school. The student suspected of making the threat is not being permitted to attend school.