A man was fatally crushed by a B train in the Bronx, and it's believed he had been subway surfing.

The Daily News reports, "The victim, described only as a man in his 30s, fell from the top of a southbound D train at the Tremont Ave. station in Mount Hope just after 4 a.m., cops said."

When he fell, the "rear of the train" rolled over him. He was pronounced dead at the scene.

Late last year, a teenager was killed while trying to attempt a subway surfing stunt on the L train. And a well-known photographer who specialized in urban exploration died while allegedly subway surfing on an F train.