Police are looking for some jerk who allegedly strong-armed a bicycle away from an 11-year-old boy at a Halloween party in a park.

Just after noon on Halloween, a boy had just won a new bicycle via a raffle at a Halloween party in Ted Watkins Park on East 103rd Street in Watts, ABC 7 reports. The boy's joy, however, was short-lived. A man walked up to the child and wrenched the bicycle from his hands. The man then set a little girl on the handlebars and rode off on the stolen bike. The little boy as well as his mother tried to pursue the man, but couldn't catch up to him.

ESR Bike and Skate Shop had donated the bike for the raffle, and decided to provide the little boy, who was in tears after the theft, with another bike.

The boy's mother was able to pick the man out from photos that had been taken during the Halloween party. He has been described as a Hispanic man, 30 to 35 years old, who is about 5'10" and 200 pounds with dark hair and brown eyes. He has several tattoos, including on his arms and neck. One of that tattoos on his left arm says "StL." L.A. County Sheriff's Sgt. Don Rubio said the man appeared to be with his daughter, who was about 2 or 3 years old, according to KTLA.

The bike is a black Micardi Civoli beach cruiser with a white seat and green rims.

Anyone with information should call Detective Daniel Cerda of the Sheriff's Department's Parks Bureau at 213-216-7675.