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Police and rescue crews work Saturday, Nov. 3, 2018 on County Highway P near its overpass at State Highway 29 in the Village of Lake Hallie at the scene of a hit-and-run accident that killed two area Girl Scouts and one adult.

CHIPPEWA FALLS -- Colten R. Treu admits he had been "huffing" chemicals at the time he struck several Girl Scouts and adults cleaning up garbage Saturday morning in Lake Hallie, killing four and leaving another girl hospitalized, according to authorities.

Treu, 21, was to appear in Chippewa County Court Monday.

The Lake Hallie Police Department sent out a press release Monday morning, identifying the four deceased people as Jayna S. Kelley, 9, Autum A. Helgeson, 10, both of Lake Hallie, Haylee J. Hickle, 10, and her mother, Sara Jo Schneider, 32, both of the town of Lafayette.

Another girl who was struck is still hospitalized but is now in stable condition.

Treu turned himself into the Chippewa Falls Police Department at 4:33 p.m. Saturday. 

Police had already identified him as the suspect; an officer tracked vehicle fluid from Treu's car 1.8 miles north into Chippewa Falls city limits. They found Treu's truck abandoned.

A passenger with Treu also has turned himself into the Eau Claire Police Department. That person was not identified.