Transit police in Boston were investigating a shooting on a subway platform at Harvard University on Sunday that prompted the school to issue a shelter-in-place order for students and staff. Authorities temporarily rerouted passengers on part of the city’s subway system to shuttle buses as officers from various departments searched for a suspect.

Transit police in Boston are investigating a shooting on a subway platform at Harvard University that prompted the school to issue a shelter-in-place order for students and staff.

Just before 4 a.m. on Sunday, Washington County 911 was called about the incident. Once first responders arrived, they found Dennis had been shot inside his girlfriend's home in the Washington Estates mobile home park. Dennis was pronounced dead at the scene. The shooting is being investigated as a homicide by Pennsylvania State Police.