(NEWSER) – The Danvers, Massachusetts, public school district canceled all classes today as police investigate the death of a 24-year-old math teacher—whom they suspect was killed by a 14-year-old student. High school teacher Colleen Ritzer was reported missing at 11:20pm last night, the Boston Globe reports. Police searched the school, finding blood in a second-floor bathroom. Soon thereafter, they found the suspect walking along the side of Route 1. The 14-year-old had been reported missing earlier, after failing to return home from school.