MINNEAPOLIS (AP) — A woman was killed and three other people were injured when a vehicle drove into demonstrators during a protest in the Minneapolis neighborhood where a Black man was fatally shot this month during his attempted arrest by members of a federal task force, police said Monday.

The crash happened at about 11:40 p.m. Sunday in Minneapolis’ Uptown neighborhood. Witnesses said the driver of an SUV struck a parked car, tossing it into the crowd of demonstrators. Police spokesman John Elder did not confirm that account, and said authorities are still investigating.

Police said protesters pulled the driver from his vehicle and witnesses told police that demonstrators began striking him. The driver was taken into custody and was being treated for injuries at a hospital. Authorities have not released his name or the names of the three people who were injured.

The brother of the woman who died identified her as Deona M. Knajdek. Garrett Knajdek told the Star Tribune his sister would have celebrated her 32nd birthday on Wednesday. He said she had 11- and 13-year-old daughters, and was actively involved in issues surrounding social justice.

“She constantly (was) sacrificing herself for everyone around her,” he said, “no matter the cost, obviously.”

Police said the driver’s motive was not immediately known, but that a preliminary investigation indicated drugs or alcohol may have been a contributing factor. A 35-year-old St. Paul man was booked into the Hennepin County Jail early Monday on suspicion of criminal vehicular homicide, driving after a license was canceled and providing false information to police. The man, who hasn’t been formally charged, has multiple convictions for driving while impaired, according to online court records.

A witness told Minnesota Public Radio that the SUV was going very fast and appeared to accelerate as it got closer to demonstrators who had blocked off a street. D.J. Hooker said the driver struck a car parked across one of the traffic lanes, sending that car flying.

“There was one line of barriers and then a second barrier, and he sped up. He sped up. He went even faster as he approached us. You could hear it … start going even faster as he got close to us,” Hooker said. He told Minnesota Public Radio News, “the car went through the air and it hit a young woman.”

Another witness, Brett Williams, said Knajdek was thrown into a stop light.

Her mother, Deb Kenney, asked for prayers for the driver’s family.

“The emotion we need to have right now is we need to be grateful that Deona was here and she shared it all with us,” Kenney said, according to KARE-11. “She wouldn’t want us to be angry at that man. She would have let it go in a minute, and said, what could we have done for him? What would have made a difference for him?”

She added: “She was here on her own accord, she chose to do this. She wanted to make that impact.”

Kenney said she hopes people don’t stop protesting because of her daughter’s death, but she said demonstrators should make sure they are staying safe.

Other injuries and deaths have been reported involving vehicles at protests across the U.S. as people have increasingly taken to streets to press their grievances. In Minneapolis, marching onto freeways has become a common tactic in recent years. Last year, a semitrailer rolled into a crowd marching on a closed Minneapolis freeway following George Floyd’s death. No one was seriously injured.

There had been ongoing protests in Uptown, about 2 1/2 miles (4 kilometers) south of downtown, since the June 3 shooting of Winston Boogie Smith Jr., a 32-year-old father of three, by members of a federal U.S. Marshals Service task force. The Uptown area includes a mix of trendy restaurants, shops and theaters popular with the city’s younger professionals, many of whom live in apartments and condominiums in the area.

By — Nick Ursini