One man was fatally shot early Sunday and at least seven injured when an altercation erupted into gunfire outside a Spring Lake Park restaurant and event center, where a concert was underway.
The Anoka County Sheriff's Office said no one was in custody Sunday evening.
Cmdr. Wayne Heath said the shooting just after midnight at Dala Thai Restaurant and Banquet Hall followed what appeared to be a conflict between two groups of people in the parking lot.
"We are still working on what started that," he said.
A video shared online shows two men fighting in the parking lot, followed by a series of 16 gunshots that sent bystanders ducking for cover behind cars.
Officials are asking anyone with video of the incident to send recordings to police by e-mail at RS-CID@co.anoka.mn.us.
Authorities identified the man killed as Chai Yang, 19, of St. Paul. Those injured: Ger Yang, 29, of Pine City, Minn.; Keng Moua, 19; Chimua Lor, 22; Lee Vang Lor, 38; Jann Her, 34; John Thoa, 26; and Kou Yang, 37, all of St. Paul. Authorities said none of the victims have life-threatening injuries.
More than a dozen cars remained Sunday as investigators combed the parking lot for clues.