A ninth-grader at Westlake High School in Thornwood has been suspended after he was accused of warning classmates not to go to school Friday, according to a report by News 12. The unidentified youth also posted videos of himself at target practice and photos of him posing with guns, News 12 said. School officials told News 12 that it has taken steps to protect students, but some parents said they are still concerned enough to keep their children home Friday.