A 15-year-old boy died on the subway while surfing on a train crossing the Williamsburg Bridge to Brooklyn.

Police said on Tuesday that a 15-year-old boy died on the subway while riding a train crossing the Williamsburg Bridge in Brooklyn.

The teen was riding on top of a J train as it exited Manhattan and rumbled over the East River when it hit a low metal beam, fell between train cars and was hit by the train around 6:45 p.m. Monday, police said.

The boy died on the spot.

According to police, no one was with the teenager at the time of the fall. His name is not immediately revealed.

The incident was very similar to the death of Ka’Von Wooden, a 15-year-old boy who also died in December while on the J train.

Police said Wooden was riding a subway train bound for Manhattan as it crossed the Williamsburg Bridge and approached the Delancey Street/Essex Street station on the Lower East Side.

He fell off the train and touched the third rail around 11:30 am on 1 December. He died on the spot.

His mother told the Daily News that Ka’Von was autistic and wouldn’t do something so dangerous if others didn’t dare him.

“He wouldn’t do it alone,” his mother Y’Vonda Maxwell, 53, said at the time. “He was a child on the spectrum. He fell into the wrong crowd. He was bullied because he was autistic.”

In August, Hamza Mohamed, 15, lost his arm when he fell while trying to surf the subway on the Forest Hills-bound R train at the Jackson Heights Roosevelt Avenue station, police said.