A 15-year-old boy died after he fell off a train and hit the third rail while subway surfing Thursday morning, the NYPD said.

The teen, identified as Kavon Wooden, was subway surfing on a J train as it crossed the Williamsburg Bridge from Brooklyn to Manhattan around 11:30 a.m. when he fell from the top and made contact with the third rail, police said.

Emergency responders pronounced him dead at the scene, the NYPD said.

J and M trains were running with delays in both directions after the incident, the MTA said.

The investigation remains ongoing. 

In a statement, NYC Transit President Richard Davey said, "Riding on top of subway cars is reckless, dumb and dangerous, frequently leading to tragedy for the person, family and friends. We implore parents to speak with their children about what can seem like a game but obviously is not."