A person was taken to hospital after being shot in Colorado when a car drove into a crowd of people protesting racial injustice and police brutality.
Aurora police said on Twitter that protesters were walking on Interstate 225 on Saturday when a vehicle passed through it.
Police said a demonstrator fired a weapon, killing at least one person who was taken to a hospital in a stable condition.
Authorities said the vehicle had been towed and are investigating this.
Protesters also broke windows to the courthouse and an office fire broke out, police said, with protesters having to leave after an illegal meeting was declared.
Tensions have been mounting during recent protests against racial injustice as federal officials were sent to quell demonstrations in Portland, Oregon.
Thousands of protesters gathered outside the Portland Federal Courthouse until the early hours of Saturday.
The Federal Protection Service declared the meeting “an illegal meeting” and said the officers had been injured.
Meanwhile, police declared a riot in Seattle on Saturday.
Protests against police brutality have spread around the world following the death of May 25 by George Floyd, a black man in Minnesota who died after a white officer held him to the ground with one knee to his neck.
In Colorado, protesters have drawn attention to the death of Elijah McClain, who was stopped by police while walking down Aurora Street in August 2019 after a 911 caller reported him suspicious.
Police placed him in a chokehold and paramedics administered 500 milligrams of ketamine, a sedative, to calm him down.
He suffered a cardiac arrest, was later declared brain dead and lost his livelihood.