LEFLORE COUNTY, Oklahoma - There is a heavy police presence Friday at Heavener Public Schools after the district received a potential threat on Thursday.

On the district's Facebook page, the school stated it was taking the threat seriously.

KFSM, the CBS affiliate in Fort Smith, says the threat was on a note found in a men’s restroom at the high school.

The district says classes are in session Friday, but extra police officers will be on campus for the rest of the day as a precaution.