The 16-year-old boy, who was in the 11th grade, was pronounced dead at the scene, they said.
The 66 train on the Port Jervis Line struck the victim between the Broadway station and Morlot Avenue shortly after 4:30 p.m. Oct. 19, said Kyalo Mulumba, the transportation agency's senior public information officer.
The train had left Middletown, NY, at 3:20 p.m. and was scheduled to arrive in Hoboken at 5:13 p.m., Mulumba said.
There were no injuries reported to the 100 or so customers and crew on board, he said.
Service was temporarily suspended in both directions between Ridgewood and Plauderville. NJ TRANSIT rail tickets and passes were being cross-honored by the agency's buses and private carriers.
NJ TRANSIT police were investigating.
Click here to follow Daily Voice Cresskill-Closter and receive free news updates.