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 / Updated By Minyvonne Burke 
 
 The Wisconsin man who struck a Girl Scout troop while they were picking up trash on the side of a road, killing three children and a parent and injuring a fourth girl, admitted that he was inhaling chemical vapors before the crash, police said Monday. 
 
 Colten Treu, 21, is being held at the Chippewa County Jail on four counts of homicide by negligent use of a motor vehicle, five counts of hit and run and four counts of homicide while intoxicated, Lake Hallie Police Chief Cal D. Smokowicz said. 
 
 Treu made his first court appeared Monday via video and had his bond set at $250,000. His next court appearance is scheduled for Tuesday. Prosecutors said Treu was involved in a similar incident in September when his vehicle rolled over while he was under the influence of drugs. 
 
 Colten Treu. via KARE 
 
 Treu was arrested Saturday afternoon after police said he ran into the Girl Scouts around 11:40 a.m. while they were doing community service on County Highway P in Lake Hallie, a village in Chippewa County northeast of Eau Claire. 
 
 Seven children and five adults, all wearing green safety vests, were in a ditch on the side of the road picking up trash, police said. 
 
 The three Girl Scouts killed were identified by police as Jayna Kelley, 9; Autumn Helgeson, 10; and Haylee Hickle, 10. The parent killed was Haylee's mother, Sara Jo Schneider, 32. 
 
 A fourth girl was injured and taken to the hospital in critical condition. Police said Monday that she is now in stable condition. The Lake Hallie Police Department said the girls were members of Troop 3055 in Chippewa Falls. 
 
 Brent Michael Kelley, Jayna's uncle, told NBC News that she loved being a Girl Scout and serving her community. Jayna's mother was the troop leader and her older sister, Terra, was also a Girl Scout, he said. 
 
 Jayna "was smart and funny and creative," he said in an email. "She loved everything about the Girl Scouts - going to Girl Scout camp and working on her merit badges. She recently got her swimming badge, and she was so proud." 
 
 "Anybody who knew Jayna knew she was sweet and bright and caring. I know one of Jayna’s favorite things was getting to go with her mom and dad and sister to see the Packers play at Lambeau field." 
 
 Treu's black Ford F-150 pickup truck was traveling north when it crossed over a lane into the ditch and hit the group, police said. Treu fled the scene after the crash, but later surrendered, police said. 
 
 Treu and a passenger said they were intentionally inhaling chemical vapors, known as "huffing," before the accident, the Lake Hallie Police Department said. 
 
 The three girls killed in the accident attended Halmstad Elementary School and Southview Elementary School in Chippewa Falls, school officials said in a statement Sunday. 
 
 Girl Scouts of the USA CEO Sylvia Acevedo said the organization was heartbroken over the deaths. 
 
 “We ask for privacy for the council, and for the families who are mourning the tragic loss of loved ones today. 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," she said in a statement. 

 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... (Associated Press) 
 
 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... (Associated Press) 
 
 LAKE HALLIE, Wis. (AP) — A young driver was inhaling chemical vapors, or huffing, just prior to striking and killing three Girl Scouts and a mother and critically injuring a fourth girl who had been picking up trash along a rural Wisconsin highway, police said Monday. 
 
 Colten Treu, 21, sped off after the collision in Lake Hallie Saturday morning, but later surrendered. 
 
 Treu was being held in the Chippewa County Jail on 13 possible charges, including four counts of intoxicated use of a motor vehicle, Chippewa County Sheriff's Sgt. Robert Jensen said. His bond was set at $250,000 during his first court appearance Monday morning. 
 
 Lake Hallie police said Monday Treu and a passenger in the pickup truck both told investigators they had intentionally been inhaling chemical vapors just prior to the crash. 
 
 Lake Hallie police said Monday that the deceased were: 9-year-old Jayna Kelley and 10-year-old Autum Helgeson, both of Lake Hallie, and 10-year-old Haylee Hickle and her 32-year-old mother, Sara Jo Schneider, from the Town of Lafayette. 
 
 The surviving girl was hospitalized in Rochester in critical condition. 
 
 The children were all fourth graders at Halmstad Elementary School and Southview Elementary School in nearby Chippewa Falls, about 90 miles (145 kilometers) east of Minneapolis. 
 
 Two small groups of Girl Scouts and their adult chaperones wore bright green safety vests Saturday as they walked along both sides of County Highway P, which they had adopted as a community service project. 
 
 Lake Hallie police Sgt. Daniel Sokup said Saturday that Treu's black Ford F-150 crossed a lane Saturday morning and veered into a roadside ditch, striking the victims. 
 
 Hundreds of community members huddled under umbrellas in the biting rain Sunday evening for a candlelight vigil outside Halmstad Elementary. Girl Scouts sang songs in memory of the victims, who were members of Troop 3055. A makeshift memorial of teddy bears, balloons and candles was set up on two wooden benches. 
 
 "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." 
 
 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." 
 
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 The Latest developments: https://bit.ly/2ztjggZ 

 CHIPPEWA FALLS, WIS. — A western Wisconsin pickup truck driver had been “huffing” chemical vapors shortly before he hit and killed three Girl Scouts and one of their parents as they picked up litter Saturday along a western Wisconsin highway, authorities said Monday. 
 
 Colten R. Treu, 21, of Chippewa Falls, appeared in court Monday and remains jailed on at least a dozen charges, including four counts of homicide by intoxicated use of a vehicle and four more charges related to him fleeing the scene before he surrendered later Saturday. 
 
 Also Monday, authorities released the identities of those killed in the crash about 11:40 a.m. along County Road P near the Hwy. 29 overpass in Lake Hallie, roughly 95 miles east of Minneapolis. 
 
 Police identified the victims as Jayna S. Kelley, 9, and Autumn A. Helgeson, 10, both of Lake Hallie; and Haylee J. Hickle, 10, and her mother, Sara Jo Schneider, 32, both from Lafayette. Jayna and Autumn attended Halmstad School, and Hickle attended Southview School, a district spokeswoman said. 
 
 A 10-year-old girl remains hospitalized in stable condition. Officials have yet to disclose her identity, but the mother’s Facebook account identifies her as Madalyn Zwiefelhofer and includes a photo of the girl tending to her duties picking up litter. 
 
 Dianne Zwiefelhofer said Monday that her daughter and family “need prayers at this time.” 
 
 From top left, clockwise, Autumn Helgeson, Sara Jo Schneider, Jayna Kelley and Haylee Hickle. 
 
 Two of the girls and the mother were dead at the scene. Two other girls were taken by ground and air ambulances to a hospital, where one of them died later Saturday. Madalyn was initially reported to be in critical condition and later listed in stable condition. 
 
 Treu was speeding north on County Road P in his pickup when it veered over the centerline and into a shallow ditch where some of the fourth-graders and the mother were collecting litter as part of an “Adopt-A-Highway” group of 12 walking along both sides of the road, according to police and witnesses. 
 
 District Attorney Wade Newell said during Monday’s hearing that Treu and a passenger had bought dusting aerosol cleaner that morning at a nearby Walmart, and Treu “was somewhat out of it.” 
 
 The passenger noticed the pickup was drifting, started arguing with Treu and grabbed the steering wheel in hopes of correcting the vehicle’s course, Newell continued. 
 
 However, the pickup continued into the ditch and hit the girls and mother, said Newell, who did not specify whether the passenger’s hand remained on the wheel at the time of impact. 
 
 Both allegedly told police after the crash that they had been “huffing” chemical vapors from the cleaner. 
 
 Treu attended Monday’s hearing via closed-monitor video. Wearing a dark T-shirt and dark pants, he sat with his head down and his hands folded during the proceeding. His defense sought bail at $1,000, pointing out that Treu has lifelong roots in the area, is employed and is a father. 
 
 Newell argued for a high bail amount, noting that Treu has been “engaging in reckless behavior on a continuing basis.” The judge set bail at the heftier sum — $250,000 with conditions. 
 
 Treu’s criminal history in Wisconsin includes a drunken-driving conviction in Chippewa County after authorities measured his blood alcohol content in late 2014 as above the legal limit of 0.08 percent but less than 0.15 percent. 
 
 In the middle of the night on Sept. 30 in nearby Rusk County, Treu was involved in an “eerily similar” incident when he rolled his vehicle, put it away in a garage and went to party with friends, the district attorney said during Monday’s hearing. Law enforcement found in the vehicle THC, the active ingredient in marijuana, and suspected methamphetamine. 
 
 The criminal complaint in that incident charges Treu with driving under the influence and various drug offenses. It alleges he drove his employer’s vehicle into a ditch while “heavily intoxicated.” His 23-year-old passenger in that crash, a coworker, also appeared under the influence of drugs to the point of only creating only “grunts and squeaks” while at the hospital. 
 
 Safety vests on 
 
 The Girl Scout group Saturday consisted of seven girls and five parents, and all were in the ditch and had on “highly visible” green safety vests, according to a police statement Monday. 
 
 After the crash, a sheriff’s deputy “diligently tracked” vehicle fluids from the scene roughly 1¾miles north to his residence in Chippewa Falls, the statement read. 
 
 Law enforcement located the truck in the garage, but Treu and the passenger had already left the house. 
 
 Nearly five hours after the crash, Treu turned himself in to police. His passenger, whose identity has yet to be released, surrendered to Eau Claire police Saturday afternoon. 
 
 Colten Treu 
 
 The girls were members of Troop 3055. Counselors and therapy dogs were made available to students and staff when classes resumed Monday. A moment of silence was observed at the start of instruction at the high school. 
 
 Halmstad art teacher Robin Kelley is the mother of Jayna, one of the girls who died, district spokeswoman Michelle Golden said Monday. Robin Kelley was among those on the litter detail but was not hit, Golden said. 
 
 First funerals 
 
 Joint services for Schneider and daughter Haylee are scheduled for 11 am. Thursday at Chippewa Valley Bible Church in Chippewa Falls. Visitations are scheduled for 3 to 8 p.m. Wednesday and from 10 to 11 a.m. at the church. 
 
 Later Thursday, a service for Autumn is scheduled for 6 p.m. at Our Saviour’s Lutheran Church in Chippewa Falls, with visitation running from 2 p.m. until proceedings begin. 
 
 Services have yet to be announced for Jayna Kelley. 
 
 Staff Writer Erin Adler contributed to this report. 
 
 Hundreds attended a candlelight vigil held outside Halmstad Elementary School in Chippewa Falls on Sunday evening. 
 
 pwalsh@startribune.com • 612-673-4482
– Police think they know why the driver of a pickup veered off the road Saturday morning and struck a group of Girl Scouts with fatal consequences: Authorities in Wisconsin's Chippewa County say Colton Treu, 21, admitted that he was huffing—or inhaling chemical vapors—shortly before the crash that left three Girl Scouts and an adult chaperone dead, reports NBC News. Treu appeared in court Monday via video and had his bond set at $250,000. He faces 13 charges, including homicide by intoxicated use of a vehicle. Details and developments: Mother and daughter: The victims were identified Monday as Jayna S. Kelley, 9; Autumn A. Helgeson, 10; Haylee J. Hickle, 10, and her mother, Sara Jo Schneider, 32. A fourth girl, unidentified, remains in critical condition, reports the AP. All the girls were fourth-graders. A passenger: Police say Treu had a passenger in the Ford F-150 with him at the time of crash: an unidentified man who later turned himself in. Both of the men admitted to huffing before the crash, reports the Minneapolis Star Tribune.