15-year-old killed while subway surfing on NYC train

A 15-year-old boy was killed while subway surfing on the Lower East Side, the NYPD said.

It happened Monday just after 7 p.m.

According to police, the teen was standing on top of a northbound J train when he struck his head on a structure on the Williamsburg Bridge and fell below the train.

His name has not been released. The investigation is ongoing.

Back in December, another 15-year-old boy died while subway surfing on the Lower East Side.

VIDEO: Subway surfers ride on top of J train into Brooklyn

Police said the boy was riding on top of a Manhattan-bound J train when he fell off, police said.

The victim hit the third rail of the subway near the Essex and Delancey Street Station, and died.

VIDEO: Two men seen subway surfing in Queens

Subway surfing continues to be an ongoing and dangerous problem in the New York City subway system.

A boy lost an arm while attempting to subway surf on a train inside a New York City subway station in August.

It happened at the Roosevelt Avenue/74th Street Station in Jackson Heights.

Police said a man who was "surfing" on the outside of a New York City subway car fell to his death in 2016. It happened just north of the West Fourth Street station in Greenwich Village.

A 27-year-old man died after falling while subway surfing in 2017. Police said the man was riding on top of a train in the Bronx when he slipped off. The man was then struck by another train while lying on the tracks.