One person was arrested in Washington Thursday after going through mailboxes. At noon a caller reported a man going through mailboxes on South Iowa Avenue and then putting things in the trunk of his vehicle. Washington Police stopped the vehicle in the 1700 block of East Washington Street. Fifty-five-year-old Joseph Edward Baker of Quincy, Illinois, was arrested. Baker was charged with burglary in the third degree, theft in the second degree and criminal trespass.