TUSCALOOSA, Ala. – A gunman stood outside of a crowded downtown bar and opened fire from two different positions early Tuesday, sending patrons running or crawling for cover in a chaotic and bloody scene. At least 17 people were hurt as bullets ricocheted and glass shards and brick chunks fell around the nightclub.

Nathan Van Wilkins, 44, surrendered about 10 hours after the 12:30 a.m. shooting near the University of Alabama campus, police said. Authorities believe he targeted someone during the bar rampage and that it was connected to an earlier shooting at a home. Wilkins was also suspected of setting three fires to equipment or property owned by an oil and gas company where he worked.

Police were not sure of a motive. They were investigating the possibility the shootings came from a dispute between rival motorcycle gangs. Wilkins' former employer, Capstone Oilfield Services, also had tried to garnish his wages but couldn't because he declared bankruptcy last year, according to court documents. And the co-owner of the FedEx store where Wilkins turned himself in said Wilkins talked about being high on drugs during the shootings.