Extreme violence: NYPD releases disturbing footage of subway assault in hopes of helping victim.

Please help: Cops are seeking any information regarding an assault depicted in a disturbing video taken aboard a city subway train.

This video contains images of extreme violence, and may be disturbing to some viewers.

Police unveiled the footage Tuesday that shows a man cowering aboard an unknown train as two men viciously assault him, punching and kicking him repeatedly in the head.

Investigators are currently unaware when, where, and aboard what train the attack occurred, and are requesting the public’s help in obtaining any information about the incident, according to department spokeswoman Sergeant Jessica McRorie.

The public can phone tips via the NYPD’s Crime Stoppers hotline at (800) 577-8477, log onto the Crime Stoppers website at www.nypdcrimestoppers.com, tweet @NYPDTips, or text tips to 274637 (CRIMES) then enter TIP577.

All calls are strictly confidential.

Reach reporter Colin Mixson at cmixson@cnglocal.com or by calling (718) 260-4505.

More from Around New York