Police say a possibly threatening message posted on SnapChat, which included a photo of a person holding a gun and captioned, “Don’t come to school tomorrow,” was a prank.

The investigation determined that the weapons in the picture were fake and students at Shakopee High School were not at risk.

Classes went on as scheduled Tuesday morning, but Principal Jeff Pawlicki says there is an increased police presence to ensure the safety of all students.

Police are still investigating the post and it’s origin.