The Associated Press reports Terrence Williams was arrested Sunday and is accused of brandishing a gun at the mother of his 10-year-old son during a visitation exchange.
Williams just finished his first season with the Celtics. The former Nets first-round pick played in 23 games spread out over parts of two seasons with the Houston Rockets.
According to the AP article, Williams was booked into the King County Jail in Seattle on Monday with a court appearance awaiting him later in the day.
Det. Melanie Frasier told the AP the woman called police about 1 p.m. Sunday and said she had been threatened with a gun. Williams had left the scene but was later arrested. No one was injured.