A woman has died after a car sped into a group of protesters on a closed highway in Seattle, officials say.
The car “drove through the closure and struck multiple pedestrians”, a Washington State Patrol tweet said.
Summer Taylor, 24, died hours later, while a second woman was seriously hurt. A suspect has been arrested.
There has been prolonged unrest in Seattle since African-American George Floyd died in police custody in Minneapolis in May.
Protests have been widespread across the US under the Black Lives Matter movement.
The incident with the vehicle occurred on Saturday morning at a southbound section of Interstate-5 that had been shut ahead of a women’s march.
Part of the protest had been live-streamed on social media under the headline “Black Femme March takes I-5”.
Footage posted on Twitter showed a white car speeding along the highway at about 01:40 (08:40 GMT), before swerving to avoid two stationary vehicles positioned as a roadblock, then hitting the two people.
The suspect – 27-year-old Dawit Kelete of Seattle – has been charged with two counts of vehicular assault. Police have not said whether it was a targeted attack.