BUSHWICK, Brooklyn (PIX11) — A 13-year-old boy was randomly punched in the face by a man with brass knuckles while riding a subway train in Brooklyn, the NYPD said.

The boy was on a southbound L train at the Halsey Street station in Bushwick on March 16 when the man approached and punched him unprovoked, police said. The brass knuckles caused a laceration to the boy’s eye. He didn’t require medical attention at the scene.

After punching the boy, the man exited the train and then re-entered the same train just a few cars down before fleeing the scene, the NYPD said.

The suspect — pictured in the video below — is in his 30s, is 6 feet 2 inches tall and has a thin build, police said.

Submit tips to police by calling Crime Stoppers at 1-800-577-TIPS (8477), visiting crimestoppers.nypdonline.org, downloading the NYPD Crime Stoppers mobile app, or texting 274637 (CRIMES) then entering TIP577. Spanish-speaking callers are asked to dial 1-888-57-PISTA (74782).