CHARLOTTE, N.C. (WTVD) --Charlotte's mayor imposed a curfew starting at midnight after three nights of protests as demonstrators massed on Charlotte's streets Thursday in the latest sign of mounting pressure for police to release video that could resolve wildly different accounts of the shooting of a black man.
As midnight approached, crowds thinned out but demonstrators remained on the streets.
After midnight, dozens of protesters continued to march and chant in the city's business district.
Officers didn't appear to be trying to arrest people or force them off the streets several minutes after midnight passed, however.
READ MORE: DETAILS ABOUT CHARLOTTE'S CURFEW (.pdf)
Earlier, protesters in Charlotte who spilled onto an interstate highway were being pushed back by police officers in riot gear.
Two officers were reportedly being treated after they were sprayed with a chemical agent by demonstrators.
After peacefully circling the city's business district for several hours, several dozen demonstrators climbed onto Interstate 277 and stood in the middle of the highway.
A line of police officers with shields and face masks advanced on the protesters, and many dispersed and climbed back up embankments off the road.
Mayor Jennifer Roberts told reporters Thursday night that she had signed documents to impose a curfew that will run from midnight to 6 a.m.
She expects it to be in place for multiple days until officials determine they no longer need it.
Demonstrators chanted "release the tape" while briefly blocking an intersection near Bank of America headquarters in the heart of the city's business district. They then continued marching as police officers watched. Members of the National Guard carrying rifles were also deployed in front of office buildings to head off another night of violence in this city on edge.
Officers warned protesters to disperse at times when they stopped in front of buildings, but the demonstration remained peaceful in the hour after darkness fell.
So far, police have resisted releasing police dashcam and body camera footage of the death of 43-year Keith Lamont Scott earlier this week. His family was shown the footage Thursday and demanded that police release it to the public. The family's lawyer said he couldn't tell whether Scott was holding a gun.
But Charlotte-Mecklenburg Police Chief Kerr Putney said earlier in the day the footage of Scott's killing could undermine the investigation. He told reporters the video will be made public when he believes there is a "compelling reason" to do so.
"You shouldn't expect it to be released," Putney said. "I'm not going to jeopardize the investigation."
Charlotte is just the latest U.S. city to be shaken by protests and recriminations over the death of a black man at the hands of police, a list that includes Baltimore, Milwaukee, Chicago, New York and Ferguson, Missouri. In Tulsa, Oklahoma, on Thursday, prosecutors charged a white officer with manslaughter for killing an unarmed black man on a city street last week.
In Charlotte, scores of rioters Wednesday night attacked reporters and others, set fires and smashed windows of hotels, office buildings and restaurants in the city's bustling downtown section. The NASCAR Hall of Fame was among the places damaged.
Forty-four people were arrested after Wednesday's protests, and one protester who was shot died at the hospital Thursday; city officials said police did not shoot the man and no arrests have been made in 26-year-old Justin Carr's death.
Carr was shot as protesters clashed with police in riot gear lined arm-in-arm protecting the Omni Hotel about 8:30 p.m. Wednesday.
City officials say Carr was not shot by an officer.
Police Chief Kerr Putney says the detectives are determined to find who fired the fatal shots. No arrests have been made.
Earlier Thursday, with dwindling daylight, the protesters formed a circle and chanted several slogans, including "We believe that we will win." Some of them wrapped bandannas around their faces to protect themselves from tear gas.
About 50 feet away, about a dozen Charlotte-Mecklenburg police officers sat on bicycles observing the protesters.
Camouflage Humvees carrying National Guard members are patrolling downtown interspersed with civilian vehicles. Guard members with fatigues and rifles walked through a plaza near the headquarters of Bank of America.
Charlotte Police Chief Putney said earlier Thursday he won't release the body and dashboard camera video while the criminal investigation into Tuesday's shooting continues.
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