Scottsdale police are investigating a 'suspicious' message that appears to target a Valley high school.
In a letter sent to parents, school officials at Chaparral High School say the post, "9/11 11:45 p.m. get ready Chap.," was reported by students and parents to school administrators.
School officials say they are working closely with the Scottsdale police and are increasing police patrols on campus.
If you have any information, you are asked to call Scottsdale police.
