A seventh threatening note was found at Flagstaff High School Thursday, but this time an arrest was made. Police say the note referenced a possible incident that may occur. Investigators and school officials identified a 17-year-old female student, who confessed to writing the note found. Police don’t know if this student was involved in writing some or all of the other notes found at the school. The student was arrested on charges of felony disruption of an educational institution and misdemeanor threats and intimidation. The matter is under investigation. Police are still asking that anyone with information in the case to contact them or Silent Witness. A $5,000 reward remains for information leading to more arrests.