Fire crews had to smash windows to get smoke out of a burning building in Oyster Bay on Monday.

The flames came from the second floor of the office building on South Street, fire officials say.

Nine departments responded to the scene to battle the blaze.

One firefighter hurt his hand and was taken to a nearby hospital for treatment.

The cause of the fire is under investigation by the Nassau County Fire Marshal's Office and NCPD Arson/Bomb Squad.