(STMW) — Police are searching for a man who tried to sexually abuse a boy at Rainbow Beach in the South Shore neighborhood Tuesday evening.

The boy was not hurt, and was able to run away after punching the man in the genitals, according to a community alert issued by Chicago Police.

The victim said he was in the 7400 block of South South Shore Drive about 5 p.m. when an unknown man came up from behind and grabbed him by the shoulder, the alert said.

The man took the boy to Rainbow Beach near 76th Street, and walked him toward the water where the man pulled his own pants down, exposing his genitals, the alert said.

Then the man turned the victim to face him and tried to pull the boy’s pants down, the alert said. The boy punched the suspect and ran away.

The suspect is described as a black man between 30 and 35 years old, about 5-foot-6 and 200 pounds with a dark complexion and a black goatee, the alert said. The man wore a green hooded sweatshirt and black and white Jordan gym shoes.

He also had two or three teardrop tattoos on his face near his eye, the alert said.

Police are urging residents to supervise children in public places, and to tell kids to report any suspicious activity to an adult right away.

Anyone with information should call 911 or contact Special Investigations Unit detectives at (312) 492-3810.

(Source: Sun-Times Media Wire © Chicago Sun-Times 2015. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.)