A teenager is dead after an apparent subway surfing incident, the MTA said Thursday.

According to the NYPD, officers who responded to the Forest Avenue stop on the M line in Ridgewood, Queens shortly before 10 p.m. Wednesday found a 13-year-old boy unconscious and unresponsive.

The boy was pronounced dead at the scene, police said. His identity has not been released.

In a statement, New York City Transit President Demetrius Crichlow called the incident "another heartbreaking situation where a child tragically mistook riding outside subway cars for some kind of joyride."

"I implore anyone who thinks surfing trains is a game—and parents, friends and teachers who can persuade them otherwise—to understand the deadly risk and ride inside," Crichlow said

This would be the fifth fatality this year, and tenth in the last two years, due to subway surfing.