Updated: 15 APR 21 08:28 ET

By Amir Vera, Jason Hanna, Brad Parks and Madeline Holcombe, CNN

(CNN) -- For the fourth night in a row, protesters gathered at the Brooklyn Center police station to demonstrate over the killing of 20-year-old Daunte Wright, a Black man, during a traffic stop in the Minneapolis suburb, hours after former police officer Kim Potter was arrested and charged in his death.

A firework was seen going off and police fired flash bombs Wednesday night as a curfew got closer. Officers declared the gathering an unlawful assembly late Wednesday, about an hour before curfew.

The curfew in Brooklyn Center was from 10 p.m. and 6 a.m. CT, Mayor Mike Elliott said Wednesday during a news conference. Surrounding cities have also enacted curfews, but Minneapolis and St. Paul have not, according to their respective websites.

More than 3,000 Minnesota National Guard members have now been activated in the Twin Cities area, according to a tweet from Operation Safety Net.

Wright's death on Sunday has roiled a metropolitan area scarred by other police-involved deaths and reignited national conversations about policing and the use of force.

Earlier this week, then-Police Chief Tim Gannon said Wright's death appeared to be the result of Potter mistaking her gun for her Taser as Wright resisted arrest.

But Imran Ali, a prosecutor in Orput's office, has said prosecutors intend "to prove that Officer Potter abrogated her responsibility to protect the public when she used her firearm rather than her Taser."

"Her action caused the unlawful killing of Mr. Wright and she must be held accountable," Ali said in a news release.

Potter, who resigned as a Brooklyn Center police officer this week, was arrested and charged Wednesday with second-degree manslaughter, Washington County Attorney Pete Orput said. The Hennepin County Medical Examiner's Office determined Wright died of a gunshot wound and that his death was a homicide.

Potter was arrested late Wednesday morning by agents with the Minnesota Bureau of Criminal Apprehension, the bureau said. She was booked into the Hennepin County Jail, online records show.

Potter posted bail and was released from custody, according to the Hennepin County Sheriff's official website. She will make her first court appearance via Zoom on Thursday at 1:30 p.m. CT.

In Minnesota, second-degree manslaughter applies when authorities allege a person causes someone's death by "culpable negligence whereby the person creates an unreasonable risk, and consciously takes chances of causing death or great bodily harm to another."

Someone convicted of this charge would face a sentence of up to 10 years in prison and/or a fine of up to $20,000. CNN has sought comment from Potter's attorney, Earl Gray.

Protests, some violent, have taken place each night after Wright's death, in and around Brooklyn Center. OSN tweeted 79 people were arrested Tuesday night.

Wright's family had called for charges against the officer. Fencing and barricades are in place around Potter's home, where two police officers and two police vehicles were seen in her driveway Wednesday.

"I share our community's anger and sadness and shock," Elliott, the mayor, said. "My message to all who are demanding justice for (Daunte Wright) and for his family is this: Your voices have been heard, now the eyes of the world are watching Brooklyn Center and I urge you to protest peacefully and without violence."

Potter and police chief resign after shooting

Developments in the investigation have unfolded daily, including the release of body camera footage and Gannon's statement that the shooting appeared accidental on Monday, and the resignations of Potter and Gannon on Tuesday.

Though Potter has submitted a resignation letter, Mayor Elliott said Tuesday he has not accepted it, adding "we're doing our internal process to make sure that we are being accountable to the steps that we need to take." Earlier, he told CBS he thought Potter should be fired.

Potter is still entitled to benefits following her resignation, though it is not clear what those benefits are, Edwards said.

Orput is the prosecutor in Washington County, near Hennepin County, where Brooklyn Center is. The case was given to Washington County prosecutors to avoid the appearance of conflict of interest in Hennepin County, officials have said.

Sunday's killing of Wright is at least the third high-profile death of a Black man during a police encounter in the Minneapolis area in the past five years, after the shooting of Philando Castile in Falcon Heights in 2016 and the death of George Floyd last year. Minneapolis police also were under scrutiny when an officer was convicted of third-degree murder and manslaughter for the 2017 fatal shooting of Justine Ruszczyk, a White woman.

The trial of Derek Chauvin, the former Minneapolis police officer accused of killing Floyd, is taking place just 10 miles from Brooklyn Center.

Gray, Potter's attorney, also is the attorney for Thomas Lane, one of four officers involved in Floyd's death, and one of the defense attorneys for Jeronimo Yanez, the former police officer who was found not guilty in Castile's death.

Reacting to the manslaughter charge, one of the Wright family's attorneys, Benjamin Crump, released a statement saying "while we appreciate that the district attorney is pursuing justice for Daunte, no conviction can give the Wright family their loved one back."

"This (shooting) was no accident. This was an intentional, deliberate and unlawful use of force," Crump's statement reads.

"Driving while Black continues to result in a death sentence. A 26-year veteran of the force knows the difference between a Taser and a firearm," Crump wrote. He added that the Wright family would hold a news conference Thursday afternoon.

As a result of unrest in the city, acting City Manager Reggie Edwards announced the formation of the Brooklyn Center Community Crisis Team. The team includes nine members representing the business, faith, education and nonprofit communities in the city as well as the city government.

Two families come together in tragedy

Floyd's family left the courthouse during Chauvin's trial Tuesday "because they thought it was important that they give comfort to Daunte Wright's mother" and family, Crump said Tuesday at a news conference with the two families.

"We will stand in support with you. ... The world is traumatized, watching another African American man being slayed," said Philonise Floyd, brother of George Floyd. "I woke up in the morning with this on my mind. I don't want to see another victim."

The losses of both Wright and Floyd were acknowledged in Tuesday's protests. Demonstrators knelt for 9 minutes and 29 seconds, to symbolize the amount of time authorities say Chauvin knelt on Floyd's neck.

And just as the Floyd family did last year, the Wright family is looking for more answers surrounding their loved one's death.

One of the family's attorneys, Jeffrey Storms, told CNN that Gannon's explanation -- that the shooting appeared to be an accident -- "is by no means proper or enough."

"There were a number of intentional events that led to (Daunte Wright) being dead, and we need to find out exactly why each one of those intentional events happened," Storms said Tuesday.

"Grabbing your sidearm that you've likely deployed thousands, if not tens of thousands, of times is an intentional act," Storms said. "A sidearm feels different than a Taser. It looks different than a Taser. (It) requires different pressure in order to deploy it."

Wright's father, Aubrey Wright, told ABC on Tuesday that he couldn't accept Gannon's explanation that Sunday's shooting was accidental.

"I can't accept that -- a mistake. That doesn't even sound right," he told ABC's "Good Morning America." He cited the officer's length of service -- authorities said she'd been with Brooklyn Center police for 26 years.

Wright's mother, Katie Wright, said she wanted to see the officer "held accountable for everything that she's taken from us."

"It should have never, ever escalated the way it did," Katie Wright told ABC.

What happened in traffic stop that ended Wright's life

Wright was with his girlfriend Sunday afternoon, driving to the house of his older brother, Damik Bryant.

Officers pulled him over in Brooklyn Center for an expired tag and learned he had an outstanding warrant, police said. The warrant was for a gross misdemeanor weapons charge, according to the news release from Orput's office.

Wright gave officers his name before calling his mother, Bryant said. His mother, Katie Wright, told reporters that Daunte Wright called her, and she heard a police officer ask him to put down his phone and get out of the car.

Daunte told her he'd explain why he was pulled over after he exited, she said. She eventually heard police ask him to hang up, and then scuffling, before the call ended, she said.

Body camera footage released Monday shows Wright standing outside his vehicle with his arms behind his back and an officer directly behind him, trying to handcuff him. An officer tells Wright "don't," before Wright twists away and gets back into the driver's seat of the car.

Orput's office said Potter "pulled her Glock 9mm handgun with her right hand and pointed it at Wright."

The officer whose camera footage was released is heard warning the man she's going to use her Taser on him, before repeatedly shouting, "Taser! Taser! Taser!" It's at this point that Orput's office says Potter "pulled the trigger on her handgun" and fired one round into the left side of Wright.

"Wright immediately said, "ah, he shot me," and the car sped away for a short distance before crashing into another vehicle and stopping," the release said.

Then, the officer is heard screaming, "Holy sh*t! I just shot him."

An ambulance was called and Wright was pronounced dead at the scene, Orput's release states.

Gannon said the portion of body-worn camera footage released Monday led him to believe the shooting was accidental and that the officer's actions before the shooting were consistent with the department's training on Tasers.

The Minnesota Bureau of Criminal Apprehension examined Potter's duty belt and found her handgun is holstered on the right side of her belt, while the Taser is on the left side, according to a news release from Orput's office.

Citing a criminal complaint, the release said the Taser is yellow with a black grip and is set in a straight-draw position, "meaning Potter would have to use her left hand to pull the Taser out of its holster."