A young girl who was riding a city bus Monday morning was groped by a stranger, police said. 

The 11-year-old victim was on board on B6 bus in Canarsie near Flatlands Avenue and East 80th Street just before 8 a.m. when she was sexually assaulted, cops said.

A man came up to the girl and grabbed her buttocks before exiting the bus when it came to a stop, police said. 

Authorities describe the man as black, 27 to 35 years old, 5 feet 7 inches tall and 150 pounds. He last seen wearing a gray sweatpants, a gray T-shirt, and gray hat.

Anyone with information in regards to this incident is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782). The public can also submit their tips by logging onto the Crime Stoppers website at or by texting their tips to 274637 (CRIMES) then enter TIP577. All calls are strictly confidential.