Hundreds of Gophers fans and young people poured out of the bars of Minneapolis’ Dinkytown neighborhood and onto the streets Saturday night after the University of Minnesota men’s hockey team’s loss in the NCAA Frozen Four championship game, in a repeat of the havoc two nights earlier.

About 9:45 p.m. — roughly a half-hour after the game ended — young people moved from sidewalks out onto the streets, chanting “USA!” and jumping, hurling profanities at police officers and throwing rocks and bottles. Some lay in the intersection of Fourth Street Southeast and 14th Avenue Southeast.

Police formed a line, warned the crowd about unlawful assembly, and ordered them to disperse or be arrested. A helicopter hovering overhead repeated the warning.

Roughly a half-hour later, police forces had pushed much of the crowd back into residential areas west and north of Dinkytown, sometimes using pepper spray.

There were reports of officers shooting rubber pellets and beanbags to target the most unruly.

“With all the sirens and helicopters, it felt like a war zone,” said recent U grad Austin Duket, 22, who ventured out after the game to see what the crowds would do. “There shouldn’t be riots right now. We didn’t even win.”

His housemate, U senior James Anderson, 22, said Saturday night that the mayhem might have been anticipated.

“After Thursday, (the riots) were an event. People were like, ‘You guys want to go to the riot on Saturday?’ ”

Minneapolis police posted a tweet about 1:30 a.m. Sunday saying at least 19 people were arrested, there were at least two incidents of arson and an undetermined amount of property damage. No officers were injured.

Police scanner reports stated officers were arresting people who used “assaultive behavior” and were damaging property.

About 10:45 p.m., several people could be seen tearing down a 14th Avenue and Sixth Street sign. They then waved it around and used it as a spear to break the windows of a parked Chevrolet Lumina.

Once the crowd began to disperse from the heart of Dinkytown, police shone spotlights on big groups of people within a six-block radius of Fourth Street Southeast and 14th Avenue Southeast.

Minneapolis police spokesman John Elder said Sunday that more information regarding specific details on the incident will be released early in the week.

Raya Zimmerman can be reached at 651-228-5524. Follow her at Twitter.com/RayaZimmerman.