Watertown police charged Nathaniel Gary, 23, of 614 Boyd St., Apt. 16, with third-degree assault at 1:25 a.m. Sunday at 912 Franklin St.
He is accused of punching Jami R. Smith, of 657 Olive St., Apt. 6, in the face, breaking his nose and causing his eye to become swollen shut at 631 Academy St.
Mr. Gary was being held on $500 bail Sunday afternoon.