Students at Sinagua Middle School were evacuated for a short time this morning. Flagstaff Unified School District officials say the front desk at the school received a vague threat at around 8 a.m. stating “there is a bomb in your school.” Students and faculty were evacuated to the football field until police arrived. School administration and police searched the school and nothing was found. Students returned to class at 9:20 a.m. The incident is under investigation.