Police were searching Monday for a man who allegedly sexually assaulted a 10-year-old girl in Queens last weekend.

Authorities say the girl was walking home on Saturday in Elmhurst when the suspect followed her into a building near Broadway and Pettit Avenue and groped her.

The suspect is described as being about 30 years old with a beard.

He was reportedly wearing a black sweat suit, a beanie and sunglasses and pushing a black mountain bike.

Anyone with information on the case should contact the Crime Stoppers hotline at 1-800-577-TIPS, or text CRIMES and then enter TIP577, or visit www.nypdcrimestoppers.com.