Sentinel High School is increasing security after the discovery of threatening graffiti, although the threat isn't thought to be credible.

Principal Ted Fuller issued the following message Thursday afternoon:

Late in the day on Wednesday, December 12th, the Sentinel High School Resource Officer, Mark Monaco, was alerted to the presence of a very small bit of graffiti written in pencil in a stall in a men’s restroom. The graffiti referenced a shooting at Sentinel on Tuesday, December 11th, two days ago. Officer Monaco reported the graffiti to Sentinel Administration as well as officials at the Missoula Police Department. Since then, we have been made aware that this information has been spread via various social media platforms. Additionally, much of what is being posted on social media erroneously reports the threat was made for tomorrow, Friday, December the 14th. This is incorrect."

The school will function on a normal schedule on Friday.

Missoula Police Department does not consider this a credible threat.  They have increased patrol vehicles in the Sentinel campus area - scheduled through Friday.

Fuller added that safety for students and staff is a top priority.  Any suspicious, concerning, or unusual activity or behavior should be reported.