Phoenix Suns' Dillon Brooks Arrested For DUI In Scottsdale

2:15 PM PT -- Law enforcement sources tell TMZ Sports Dillon Brooks' DUI arrest was not related to alcohol.

Phoenix Suns player Dillon Brooks was busted for DUI Friday morning, TMZ Sports has learned.

Authorities tell us ... the small forward was pulled over in Scottsdale around 1 AM for traffic violations. After an investigation, Brooks was placed under arrest for suspicion of driving under the influence.

He was taken to Scottsdale City jail and processed ... and was released from custody around 3:30 AM.

We're told he was respectful and cooperative throughout the incident.

We obtained Brooks' mugshot ... showing the hooper staring into the camera with a white tank top and lengthy beard.

Brooks -- who has reportedly made $105 million on the court -- has been sidelined the past few weeks with a fractured hand. The Suns hosted the Chicago Bulls without him ... losing a close one, 105-103.

Brooks is known for playing the villain role in the NBA -- he's got a well-documented feud with LeBron James -- as well as his strength as a defender.

He also played for the Memphis Grizzlies and Houston Rockets before joining Phoenix in 2025.

Brooks had a run-in with police weeks prior -- with cops pulling him over for allegedly driving 85 MPH in a 45 zone on Jan. 12.