Riley High School will be on heightened alert on Thursday, Aug. 30, after a threatening message was found written on a wall in a boy’s restroom on Wednesday, according to WNDU.

The message suggested that the author would shoot the school, WNDU reported.

School administrators issued a letter to parents informing them of the threat and security measures that are in place.

They are also reminding students that anybody with information about who may have written the message can make an anonymous report online at quicktip.sb.school.