(Milford, CT) -- An eleventh-grader at a Connecticut high school is dead after being stabbed by another student. Authorities say 16-year-old Maren Sanchez was found slashed in a hallway at Jonathan Law High School in Milford around seven this morning. She was taken to Bridgeport Hospital and pronounced dead. A 16-year-old boy is in custody. The "Connecticut Post" reports the stabbing may have been over a fight about the junior prom that was scheduled for tonight. The event has since been postponed. The incident triggered a lockdown, and students were eventually dismissed for the day. Sanchez was reportedly a popular honor student and athlete. Grief counselors are hand.