MANDAN, N.D. — Morton County sheriff’s officials say a 13-year-old female student is responsible for two threats of a shooting at the high school in New Salem.

The sheriff’s office says the girl has been cited for terrorizing and has been suspended from New Salem-Almont High School. Authorities say the latest threat came Tuesday afternoon when a graffiti message of a school shooting was found on a bathroom wall. Students were evacuated. The school was secured and searched. No weapons were found.

The message was similar to one found last Friday, Dec. 1. Officials say a message left on a bathroom wall said there would be a shooting during sixth period. The incident resulted in a lockdown. No weapons were found.