NEW YORK (CBSNewYork) – Police in Brooklyn have released surveillance video of a vicious attack and robbery of a 19-year-old victim.

robberysuspects1 Brutal Beating, Robbery Caught On Video In Brooklyn

(credit: NYPD)

It happened at 2 p.m. on Oct. 8 at 56th Street between 6th and 7th Avenues in Sunset Park.

The victim was walking when three teens approached him from behind, shoved him to the ground and began kicking and punching him.

robberysuspects Brutal Beating, Robbery Caught On Video In Brooklyn

(credit: NYPD)

The assailants then allegedly used a knife to cut the straps off his backpack, which they ran off with.

The victim was treated and released at Lutheran Medical Center.

Anyone with any information is asked to call the NYPD’s Crime Stoppers hotline at 1-800-577-TIPS (8477) or 1-888-57-PISTA (74782) for Spanish. You can also submit through their website by clicking here, on Twitter by tweeting @NYPDTips, or you can text a tip to 274637 (CRIMES) and then enter TIP577.

All calls are confidential.