Girl Scouts CEO Sylvia Acevedo issued a statement Sunday expressing condolences for the victims, who were picking up litter along the road in Lake Hallie when a pickup truck veered of the road and hit them.
A relative of one girl who was uninjured in the crash said the children were fourth graders at Halmstad Elementary School in Chippewa Falls, which is 182 miles west of Green Bay. A 21-year-old man from Chippewa Falls later turned himself in to authorities in connection with the crash, Lake Hallie police reported.
Acevedo says Girl Scouts everywhere stand with "our sister Girl Scouts in Wisconsin to grieve and comfort one another in the wake of this awful tragedy".
Girl scouts sing their songs in times of joy, and times of sadness.More news: Man-eating tiger shot dead in India after massive hunt
At a little before noon on Saturday, Treu struck and killed three girl scouts and one adult who was supervising the girls as the picked up trash by the side of a country road.
Police say a 21-year-old driver of a pick-up truck left the road and hit the troop.
Holding candles and umbrellas, the crowd gathered Sunday evening outside Halmstad Elementary School.
Eliopoulos says it's a "difficult time for our students, families and staff", and that the district will provide support "for as long as needed". The fourth girl was transported to a hospital in critical condition. "There's been a lot of people - it's been a very supportive environment", said Michelle Golden, human resources director for the school district.More news: Police say 2 small planes crashed in Ottawa, no word on injuries
At both schools Sunday, counselors were on hand to console students, staff and parents.
The Ford F-150 was traveling northbound when it crossed over a lane of traffic and into the ditch, where it struck the group, Lake Hallie police Sgt. Daniel Sokup said. Other members of the troop were picking up trash from the opposite shoulder. He was jailed Sunday and charged with four counts of homicide through the negligent use of a vehicle. The names of the dead were not immediately released.
Girl Scouts of the Northwestern Great Lakes said the crash was a "tragic loss in our Girl Scout sisterhood" in a Facebook post.
"I'm always telling one of my residents that he shouldn't walk this strip at night", Spallees said.More news: Mayor of Utah city killed in ‘insider attack’ in Afghanistan
A candlelight vigil was held for the victims at Halmstead Elementary School, where two of the deceased girls attended, on Sunday night.