The officer involved in the death of Tashi Brown will face criminal charges, Sheriff Joseph Lombardo announced Monday.

Kenneth Lopera (Las Vegas Metropolitan Police Department)

Las Vegas police officer Kenneth Lopera. Facebook

Las Vegas police officer Kenneth Lopera. Facebook

Las Vegas police officer Kenneth Lopera. Facebook

Clark County Sheriff Joe Lombardo announces at the Las Vegas Police headquarters that officer Kenneth Lopera will be prosecuted for the in-custody death of Tashii Brown, Monday, June 5, 2017. Elizabeth Brumley/Las Vegas Review-Journal

Metropolitan Police Department body-camera footage shows Tashii Brown being stunned with a taser before his death on May 14, 2017, in Las Vegas. Brown died in police custody after he was stunned with a Taser and rendered unconscious using a controversial choke hold technique. (Metropolitan Police Department)

Metropolitan Police Department Undersheriff Kevin McMahill plays security footage of the event involving Tashii Brown during a press conference at Las Vegas Metropolitan Police Department Wednesday, May 17, 2017, in Las Vegas. Brown died in police custody after he was stunned with a Taser and rendered unconscious using a controversial choke hold technique. (Bridget Bennett Las Vegas Review-Journal) @bridgetkbennett

Kenneth Lopera (Las Vegas Metropolitan Police Department)

Clark County Sheriff Joe Lombardo announces at the Las Vegas Police headquarters that officer Kenneth Lopera will be prosecuted for the in-custody death of Tashii Brown, Monday, June 5, 2017. Elizabeth Brumley/Las Vegas Review-Journal

The Las Vegas police officer who stunned Tashii Brown seven times with a Taser and held him in an unauthorized chokehold for more than a minute before his death last month is now facing criminal charges, Sheriff Joseph Lombardo announced Monday.

At an afternoon news briefing, Lombardo said officer Kenneth Lopera, 31, is facing felony charges of involuntary manslaughter and oppression under the color of office.

Lopera’s arrest marks the first time in nearly three decades a Metropolitan Police Department officer has faced charges in connection with a police shooting or in-custody death. The sheriff said both charges carry sentences of one to four years in prison.

Lombardo’s announcement came shortly after the Clark County coroner’s office ruled Brown’s death a homicide Monday afternoon.

In a statement, county Coroner Jon Fudenberg said Brown died from “asphyxia due to police restraint procedures and other significant conditions, including methamphetamine intoxication and cardiomegaly (an enlarged heart).”

Brown, 40, of Las Vegas, died May 14 at Sunrise Hospital and Medical Center after a struggle with Lopera, as seen in previously released body camera footage.

“The charges are the result of the coroner’s findings, along with evidence gathered from video surveillance, body-worn cameras and witness statements,” Lombardo said Monday. “It should be noted that officer Lopera did not provide a statement to the force investigation team, which is responsible for the criminal investigation of this incident.”

Night of Brown’s death

According to police, Brown, who at times also used his mother’s surname of Farmer, initially approached two uniformed officers about 1 a.m. May 14 inside The Venetian, 3355 Las Vegas Blvd. South. Police said he was “acting erratic” and paranoid at the time and told officers “people were chasing him.”

Brown, who was unarmed, then walked out of the hotel and tried opening the tailgate and then the driver’s side door of a truck parked near the rear of the property. Lopera began using a Taser on him, then struck Brown multiple times with a closed fist and administered a chokehold while two other officers jumped into the fray, police said.

Brown died shortly after the struggle.

Three days after Brown’s death, Undersheriff Kevin McMahill said Brown, a father of two, would not have faced criminal charges had he survived.

Attorney Andre Lagomarsino, who is representing Brown’s mother, Trinita Farmer, said Monday that she is “devastated by the loss of her son.”

“He was a good person who did not deserve to die,” Lagomarsino said. “No amount of criminal prosecution will ever bring him back. Trinita is grateful to her family and the community for the love and support she has received in this most trying time.”

Officer out on bail

Lopera, a five-year veteran of the force, was initially placed on paid administrative leave after Brown’s death, but Lombardo said Monday that the officer had been placed on unpaid administrative leave.

Shortly after the sheriff’s news briefing, during which Lombardo did not take any questions, Lopera was arrested and booked into the Clark County Detention Center. The department sent out a copy of his mug shot at 4:29 p.m.

Right after he was booked, the Las Vegas Police Protective Association quickly bailed out Lopera after paying $6,000, according to the police union’s president, Steve Grammas.

Grammas said Monday that Lopera did not act with ill intent the night Brown was killed.

“We will be representing the officer to the fullest extent that we can,” he said. “We will stand by him through this process.”

Metro use of neck restraints

As of Monday afternoon, it remained unclear whether the department will allow the continued use of neck restraints.

“As the criminal investigation moves forward, an internal administrative investigation will also proceed,” Lombardo said, adding that the department will announce its findings in the next two months.

“I would ask the public to continue to have patience, as you have demonstrated so far,” the sheriff said before concluding the news conference.

Tod Story, executive director of the American Civil Liberties Union of Nevada, said late Monday that he expects the Clark County district attorney’s office to follow through and act on the “tragic, senseless and unnecessary” death.

“I’m happy to see that Metro is following through on its review process,” he said. “I remain troubled on the use of the chokehold that clearly caused Tashii Brown’s death. … We need to make sure this never happens again.”

NAACP Las Vegas President Roxann McCoy also opposes Metro’s use of the “lateral vascular neck restraint,” the department-sanctioned hold officers are trained to use.

“They really just need to get rid of it altogether,” she said. “When you’re under duress, how do you ascertain what hold you’re using?”

Contact Wesley Juhl at wjuhl@reviewjournal.com and 702-383-0391. Follow @WesJuhl on Twitter. Contact Rachel Crosby at rcrosby@reviewjournal.com or 702-387-5290. Follow @rachelacrosby on Twitter.