Officers responded to Preston Street for a 911 call regarding a domestic disturbance.  When officers arrived, they made contact with a male and female.  Both parties were separated and interviewed.  Officers were informed that Gagnon was intoxicated and assaulted his mother.  Gagnon was subsequently arrested.  Gagnon was transported to the Hillsboro Police Department where he was booked and released on PR bail.  Gagnon was issued a future court date and released.