NIAGARA FALLS – A LaSalle-area man was arrested shortly after 3:30 p.m. Friday after police said he threatened a girl with a knife in a Niagara Falls Boulevard coin laundry.

Mason M. Smith, 21, of 74th Street, was charged with second-degree menacing. Police said he had been harassing the 15-year-old victim and on Friday, slapped her in the face in the Maytag Laundry, and also shoved a friend of the girl into a wall before leaving the business.