The NYPD and the MTA continue to sound the alarm about the deadly consequences of subway surfing.

Police took a 12-year-old boy into custody after officers caught him riding on top of a train in Queens.

Investigators say the boy has been caught subway surfing at least four times.

On Thursday, a 14-year-old boy died after falling off a train in Brooklyn. He was the second teenager to die from subway surfing in a week.