Police are investigating a threat found on a bathroom wall Tuesday morning at Rogers Heritage High School.

A notice to parents was sent at 11:20 a.m., said Ashley Kelley Siwiec, district spokeswoman.

There was no imminent danger to students, according to a message from Karen Steen, school principal. The incident is the fourth in the Rogers School District in four days. Threats have also been found recently in Fayetteville and Bentonville schools.