SAN FRANCISCO – Former Oakland Raiders player Aldon Smith surrendered to police Friday on charges he violated a domestic violence restraining order.

San Francisco police said the 28-year-old Smith, a Raytown High School graduate and former University of Missouri star, turned himself and was booked on three misdemeanor charges of violating a court order to stay away from a domestic violence victim.

Earlier this month, Smith pleaded not guilty to domestic violence and other charges and a judge issued a protective order prohibiting him from contacting the victim.

Police said Smith violated the restraining order earlier this week.

Smith's attorney, Joshua Bentley, did not return a voicemail message from The Associated Press seeking comment.

The Raiders released the linebacker days after his arrest on the domestic violence charges.

He had been on the suspended list since late 2015 for violating the NFL's policy on substance abuse.