Tire Nichols' brother describes an "endless nightmare" as a prosecutor promises that all those involved in the fatal encounter will be investigated

Capturing moments with his camera and skating, which Tire Nichols loved 1:35

(CNN) -- 

For the first time since Tire Nichols was fatally beaten by police, his brother Jamal Dupree has spoken publicly about the horror and anguish his family lives with every day.

"It's like a never-ending nightmare," Dupree told "CNN This Morning" on Tuesday.

Dupree has not seen the video in which his 29-year-old brother is beaten with a baton and kicked in the head.

She said that she doesn't need to see him.

"As soon as I saw the photos of him at the hospital, I knew that my brother was treated like an animal," Dupree said.

"They beat him like it was nothing. I don't need to see the video to know that."

Nichols, who was black, was pinned to the ground and repeatedly beaten after a traffic stop by Memphis police on January 7.

He died three days later.

Following public outrage over the gruesome video, authorities announced further dismissals or disciplinary action against public officials present at the scene.

Officials announced Monday the firing of three members of the Memphis Fire Department and revealed that two more police officers had been suspended than previously known.

That adds to the five Memphis police officers who have already been fired and charged, the disbandment of a police unit they belonged to and two sheriff's deputies who have been placed on leave.

These are the critical moments that led to the death of Tire Nichols 8:51

“We are looking at everyone who had any involvement in this incident,” from the officers and paramedics on the scene to those who filed paperwork, Shelby County District Attorney Steven Mulroy said Monday.

Prosecutors moved "extraordinarily quickly" with the charges against the five officers "primarily responsible for the death of Tire Nichols," the prosecutor said.

"As for everyone else, it will take some time to do that investigation, but I assure you that the investigation is ongoing."

The release last week of violent footage of the Nichols attack once again horrified a country facing a constant stream of videos of police violence, especially against black people.

Beyond sparking protests from New York to Los Angeles and renewing calls for sweeping police reform, the Nichols case has raised questions in other cities about police units like the Memphis SCORPION squad, whose officers stopped Nichols on a highway. .

• Two other Memphis police officers and three firefighters fired after Tire Nichols' fatal beating

The January 7 incident began when police pulled Nichols over for what they initially said was suspicion of reckless driving;

the scene takes place in two places.

Video released Friday shows Nichols running away after officers pulled him out of a car and used pepper spray and a taser to try to get him to lie face down on the ground;

and then the officers catch up with him at a second location, where they repeatedly kick and punch him.

After his hands are restrained and he is left lying on the ground, it takes approximately 23 minutes before a stretcher arrives on the scene.

Nichols died at a hospital from his injuries three days later, authorities said.

The Memphis Fire Department announced Monday that two emergency medical technicians and a fire lieutenant have been fired for their on-scene response.

“I don't think we've seen the end of this.

And I think we're going to find out there's more to this as we move through the trial,” said Jeff Warren, a member of the Memphis City Council.

"I don't think we're at the top of this yet."

“We need to make sure we go through our Police Department and see where we were weak, what happened to our procedures, what happened to our oversight,” Warren said.

The charges, firings and people placed on leave so far

From top left: Emmitt Martin III, Desmond Mills, Demetrius Haley.

From bottom left: Justin Smith and Tadarrius Bean.

(Credit: Shelby County Criminal Justice System)

Five Memphis police officers, all black, were fired on January 20 and later charged last week.

They face seven charges, including: manslaughter, aggravated assault, aggravated unlawful imprisonment, official misconduct and official repression.

The five officers, Tadarrius Bean, Demetrius Haley, Justin Smith, Emmitt Martin and Desmond Mills Jr., are expected to be arraigned on February 17.

Police on Monday said a sixth and seventh officers were suspended with the other five on Jan. 8, and those two officers are still the subject of an internal investigation.

Police identified one of the two officers as Preston Hemphill, who is white.

Police spokeswoman Kimberly Elder declined to say whether she is being paid to Hemphill.

On Friday, the city released body camera and pole camera surveillance footage from the initial traffic stop, as well as the beating at the second site.

One of the body cam videos reveals that Hemphill, at the site of the initial traffic stop, fired a Taser at Nichols, eventually saying after Nichols ran: "One of those spikes hit the bastard."

• The timeline of the arrest and fatal beating of Tire Nichols

Hemphill twice tells a policeman who was with him: "I hope he gets his ass kicked."

That body camera video does not show Hemphill at the second site, where the county district attorney said Nichols was beaten and suffered serious injuries.

Hemphill's attorney, Lee Gerald, said his client, who has not been charged, "was never present at the second scene."

The seventh agent has not been publicly identified.

"The actions and inactions of Officer Preston Hemphill and other police officers have been and continue to be the subject of this investigation," Memphis police said in a news release Monday.

"There are several charges still under development that are imminent," the statement said.

The fire personnel fired for their response to the encounter are emergency medical technicians Robert Long and JaMichael Sandridge and fire lieutenant Michelle Whitaker, the fire department said Monday.

From left to right: Robert Long, left;

JaMichael Sandridge and Lt. Michelle Whitaker have been fired from the Memphis Fire Department, the department said Monday.

(Credit: Memphis Fire Department)

The three were responding to a report of "a person being pepper sprayed" when they arrived at the scene of the fatal beating and found Nichols on the ground, according to the department.

The fire department's investigation concluded that "the two EMTs responded based on the initial nature of the call and information they received at the scene and failed to conduct an adequate assessment of Mr. Nichols' patient," the fire chief said. it's a statement.

Whitaker had remained in the fire truck, according to the statement.

Pole camera video released Friday shows that after EMTs arrived and before the ambulance arrived, first responders repeatedly backed away from Nichols, with Nichols intermittently falling onto his side.

Additionally, two Shelby County Sheriff's Office deputies were suspended last week pending an investigation, after video of the incident was released.

"I am concerned about two officers who appeared on the scene following a physical confrontation between police and Tire Nichols," Sheriff Floyd Bonner Jr. said Friday.

Lawyers for two of the fired police officers have made comments to CNN.

Martin's lawyer, William Massey, said that "no one out there that night intended for Tire Nichols to die."

Mills Jr.'s attorney, Blake Ballin, told CNN that the videos "produced as many questions as answers," specifically regarding his client's involvement during the fatal encounter, adding that Mills arrived later than other officers and that his vision was affected by the pepper spray used during the traffic stop.

“Some of the questions that remain will require a focus on Desmond Mills' individual actions” and “whether Desmond's actions crossed the lines that other officers crossed during this incident,” Ballin said.

Lawyers for the other former officers did not immediately respond to requests for comment.

Count of cases of police violence in the US 4:20

'A great system collapse'

While some have praised Chief Cerelyn "CJ" Davis' quick action on the case, she also created the now deactivated SCORPION police unit that the accused officers were a part of.

“A reckoning is coming for the police department and for the leadership,” said Frank Colvett, a member of the Memphis City Council.

"She's going to have to answer not just to the council, but also to the citizens, and really to the world."

After the fire department layoffs were announced Monday, a lawyer for Tire Nichols' family, Antonio Romanucci, said: "Everyone at that scene was complicit in the death of this man, one way or another, someone failed Tire Nichols".

“They failed him by using excessive force;

they failed him by beating him severely;

they failed him by not intervening;

they failed him by not helping him," the lawyer told CNN's Wolf Blitzer on Monday.

The attorney said Nichols' family is still trying to absorb the breadth of this multi-agency investigation, while also grappling with the loss of their loved one.

“This is such a serious breakdown of the system that we are supposed to trust, it really is indescribable,” Romanucci said.

The Nichols family is expected to hold a press conference Tuesday night at the Mason Temple Church of God in Christ in Memphis, where Martin Luther King Jr. delivered his famous last speech the day before he was assassinated on that city, according to a news release from his attorney Ben Crump.

CNN's Nick Valencia, Mark Morales and Jamiel Lynch contributed to this report.

Police Brutality Tyre Nichols