Girl Scouts sing as hundreds of community members turn out in the rain Sunday evening, Nov. 4, 2018, for a candlelight vigil at Halmstad Elementary School in Chippewa Falls, Wis., in remembrance of three fourth grade Girl Scouts and a parent who died Saturday, after being struck by a pickup truck while their troop was picking up trash along a rural highway. The 21-year-old driver, Colten Treu of Chippewa Falls, sped off but later surrendered. He will be charged with four counts of homicide, Lake Hallie police Sgt. Daniel Sokup said. (Steve Kinderman/The Eau Claire Leader-Telegram via AP)

LAKE HALLIE, Wis. (AP) — As a western Wisconsin community grieved the deaths of three Girl Scouts and a parent who were struck by a pickup truck, authorities still had not released the names of the victims or a fourth girl who was critically injured but survived.

Police say they were hit over the weekend when the pickup veered off a rural highway in Lake Hallie as they collected trash along the road and then sped away.

The girls were fourth-graders and members of Troop 3055 in nearby Chippewa Falls, about 90 miles east of Minneapolis.

“Our hearts are broken for the girls and families of the Girl Scouts of the Northwestern Great Lakes,” CEO Sylvia Acevedo of Girl Scouts of the USA said in a statement Sunday. “The Girl Scout Movement everywhere stands with our sister Girl Scouts in Wisconsin to grieve and comfort one another in the wake of this terrible tragedy.”

Hundreds of community members gathered in 40-degree weather Sunday evening for a vigil outside Halmstad Elementary School, where some of the girls were students. Many in the crowd held candles and umbrellas in the rain. Several Girl Scouts sang songs in memory of the victims.

Earlier Sunday, teddy bears, balloons and candles sat on two wooden benches in front of Halmstad Elementary while dozens of families met inside with faith leaders and counselors. Families did the same at Southview Elementary School, the other school the girls attended, the Minneapolis Star Tribune reported.

“It’s been very nice. There’s been a lot of people — it’s been a very supportive environment,” said Michelle Golden, human resources director for Chippewa Falls School District.

In a message to parents, Superintendent Heidi Eliopoulos said: “This is a difficult time for our students, families and staff. We will be providing ongoing support for both students (and) families and staff for as long as needed.”

Lake Hallie police Sgt. Daniel Sokup said the pickup, a black Ford F-150, crossed a lane Saturday morning and veered into a roadside ditch, striking the victims. Other members of the troop were picking up trash from the opposite shoulder.

The 21-year-old driver, Colten Treu of Chippewa Falls, sped off but later surrendered. He will be charged with four counts of homicide, Sokup said.