(WHITEFISH, MT) - Four naked women streaking through a Montana ski resort town triggered a riot early Saturday. Fifteen people were arrested.

Police Chief William LaBrie said the riot began about 15 minutes into New Year's Day when the women ran nude down Central Avenue. Officers caught and arrested three of them on indecent exposure charges.

But more than 400 people spilled out of the surrounding bars and began pelting police with bottles, snowballs, rocks and fireworks, LaBrie said.

The police called in help from the sheriff's department, the Montana Highway Patrol, the U.S. Border Patrol and the Burlington Northern Santa Fe Railroad Police.

The 12 men arrested were released from jail Saturday morning as they sobered up, police said, and the three streakers were freed on $150 bail each. As for the fourth streaker, police said they had a good description.