According to a Fox 4 News report, a woman driving the vehicle hit four people on a sidewalk and injured a worker inside the bar when her vehicle crashed. Boykin, who was listed on the police report as a passenger, was arrested on related drug charges and public intoxication.
On Friday, when asked about Boykin's status with the team, Seahawks head coach Pete Carroll told reporters: "Early indications are that everything will give him an opportunity to be back with us."
None of the people hit in the incident were seriously injured. The report did not indicate what drug was in Boykin's possession.
Boykin spent last season as the primary backup behind Russell Wilson. He threw for 145 yards and a touchdown against an interception in five appearances.
This is the second time Boykin has been involved in an alcohol-related arrest. He was suspended before the 2016 Alamo Bowl after assaulting a police officer during a bar fight.