A refugee from Ukraine has been charged with vehicular homicide over the death of a rising US cyclist star who was mowed down while training for the world championships.

Yeva Smilianska, 23, was driving her Toyota Matrix on Highway 119 from Longmont to Boulder in July when she allegedly slammed into US Junior Men’s National Team member Magnus White, 17, on the paved right shoulder.

​”Based on the totality of circumstances, it appears most likely that Smilianska was asleep at the time of the crash,” states an affidavit cited by KMGH-TV.

White was training for the Aug. 10 Junior Men’s Mountain Bike Cross-Country World Championships in Glasgow, according to the 20th Judicial District Attorney’s Office.

The biker, who was wearing a helmet, was taken to Boulder Community Hospital, where he died.

Smilianska, of Westminster, was arrested Tuesday on a charge of reckless vehicular homicide, a felony, and booked into the Boulder County Jail, KMGH reported.

White’s family said in a statement that the driver “willfully and consciously chose to get behind the wheel of her car, engaging in reckless driving behavior that resulted in the fatal collision into our son Magnus who was struck from behind and ejected from his bicycle.

“As parents, we teach our children about consequences and accountability. We believe in consequences and accountability when Magnus was alive and we held him to that. Magnus believed in this as well,” the grieving family wrote, according to the outlet.

They called for “the maximum penalty for her crime, not only for her willful actions, but also for the profound pain and suffering endured by Magnus’s mother, father, brother, family, friends, teammates and entire community — a dark shadow of grief that will hang over them for the remainder of their lives.”

The family added that they will struggle during Christmas, the teen’s favorite holiday.

Smilianska asked witnesses who stopped if she could leave before police arrived, according to an affidavit cited by KMGH.

Some motorists said it appeared like she did not know she had hit somebody.

“Right when I was told I was free to go, (Smilianska) came over to ask me what happened. So I gave her, like, a brief explanation … and she said she passed out at the wheel,” a witness said, according to the affidavit.

Smilianska told investigators she tried to steer back on the road, but “the next thing she remembered, she was off the side of the highway and felt ‘fuzzy,'” according to the affidavit. 

An autopsy report found that the cause of death was blunt force head trauma and the manner of death was an accident, the outlet reported.

An inspection found no issues with the vehicle and noted that when traveling over 50 mph, it pulled slightly to the right without “steering input,” according to the affidavit.

Investigators also determined that Smilianska, who said she hadn’t been sleeping well since she fled Ukraine, likely slept for less than three hours the night before the crash. 

Smilianska is a refugee who fled to escape the war and has been living in Colorado with her spouse, her defense said, adding that she has no criminal history.

A judge set a personal recognizance bond at $100,000, according to the outlet.

White’s cycling resume contained a number of accolades, including winning a junior 17-18 national championship in cyclocross in 2021 and clinching a spot on the US national team.

He competed with the team in Europe ahead of last year’s cyclocross world championships and was selected to represent the US at this year’s cyclocross Worlds in the Netherlands.

White, who began racing at a national level at the age of 10, leaves behind his parents, Michael and Jill, and his brother, Eero.