Police used tear gas to disperse a large gathering at a beach in northern Anoka County Friday afternoon.
The Anoka County Sheriff's Office says it was called just before 4 p.m. to the beach at Lake George County Park in Oak Grove to a report of a "group of people in the beach area who were becoming unruly and that there was a DJ on site."
The group was reportedly 300 in size, with several calls relating to the park made to police.
When deputies arrived they found around 200 in the beach area "and fights were occurring in multiple areas of the park."
Help was called in from other law enforcement agencies and deputies began walking around telling people the park was closing, including using a PA system.
But many still refused to leave the park, telling police as such, and police also claim they received reports of a man with a gun, and say people had started climbing onto the roof of the bathroom building in the park.
"A smoke canister was deployed at the location and some of the crowd dispersed although many still refused to leave," Anoka County Sheriff's Office said.
"CS irritant was deployed and then the group dispersed."
One person sought medical attention after the incident. Police say no arrests have been made at this stage.
Meanwhile Lake George is closed through the weekend, with sheriff's office commander Wayne Heath saying it was closed earlier this week "due to similar issues."