LOS ANGELES — When a top official responsible for oversight of the Los Angeles County Sheriff's Department announced recently that he is being forced out of his position, it brought to a fever pitch tensions that had been building for months.

On one side are watchdogs who say efforts to bring reforms and transparency to the Sheriff's Department are being stymied. On the other are county officials who claim fresh perspectives are needed on the Civilian Oversight Commission.

The showdown is playing out as the commission continues fighting the county for access to internal sheriff's department records on deputy misconduct, including investigations into gang-like cliques said to rule over certain stations and promote a culture of violence.

Robert Bonner, the oversight commission chair, wrote in a letter last month that he was "involuntarily leaving" the body he has been a member of since its founding in 2016. Bonner, 83, said in an interview that he was chairing the commission's May meeting at the L.A. County Hall of Records when he unexpectedly received a letter from County Supervisor Kathryn Barger stating that she would be appointing someone to replace him.

On Thursday, Bonner gave his first address to the commission since revealing his time as chair will end this month.

Bonner said he was "still surprised" that he had been "dismissed without so much as a phone call from Supervisor Barger."

And he had choice words for other county operators that he described as thorns in the commission's side.

"It can be treacherous. The county bureaucrats — and this includes, by the way, the county counsel's office — they guard their turf and see an independent commission as a threat to that turf," Bonner said.

"There are forces within the county," he added later, "that do not want to see real, effective and meaningful oversight over the sheriff's department."

Helen Chavez, a spokesperson for Barger, said in an email that Bonner's claims that the supervisor summarily dismissed him were made "for dramatic effect" and "are not only inaccurate but also mischaracterize the circumstances of his departure" from the commission.

"His assertion that his presence alone was essential to achieving reforms is both self-serving and dismissive of the dedicated Commissioners and staff who are collectively advancing the Civilian Oversight Commission's mission," the statement said. "These reforms are bigger than any one individual, and they will continue without interruption."

Barger, who chairs the county's Board of Supervisors, told The Times in a statement last month that she is "committed to broadening the diversity of voices and expertise represented on the Commission."

She said her decision to replace Bonner "reflects my desire to continue cultivating public trust in the oversight process by introducing new perspectives that support the Commission's vital work."

On Thursday, Patti Giggans, an ally of Bonner's on the commission, stood up for the departing chairman during what he said would likely be the last of the body's monthly meetings he'd attend as a commissioner.

"I have a feeling all of us here, all the commissioners, appreciate your leadership, your tenacity, your brilliance and courage to go up against forces that are not necessarily yet in agreement with what effective oversight means," she said.

The County Counsel's office said in an email that it "has fully supported the COC, as an advisory body to the Board, in its efforts to seek the information it needs to play a powerful oversight role on behalf of LA County citizens."

But some observers note that the county counsel is in an awkward position, since the office represents multiple parties involved. That includes the Civilian Oversight Commission, which has been trying to enforce subpoenas, as well as Barger's office and the sheriff's department.

Peter Eliasberg, chief counsel at the American Civil Liberties Union of Southern California, said it seems to him that nearly every time such a dispute comes up, the county's lawyers side with the sheriff's department.

"It's either intentional or it's incredibly short-sighted for Commissioner Bonner to be pushed out at this point, at a time when he's been spearheading incredibly important reforms," Eliasberg said. "It feels to me like this is an effort once again to hamstring this commission."

Bonner, who previously served as a federal judge and was head of the Drug Enforcement Administration, isn't the only commissioner to acrimoniously leave the oversight body this year.

In February, Loyola Law School professor Sean Kennedy resigned after county lawyers sought to stop him from filing a brief in court in support of Diana Teran, an advisor to former L.A. County Dist. Atty. George Gascón who faced felony charges from the state. Teran was accused of improperly accessing records about sheriff's deputies, but a state appellate court recently moved to dismiss the case.

Kennedy said in February that he quit because he believed it was "not appropriate for the County Counsel to control the COC's independent oversight decisions."

Last month, Kennedy received notification that a law firm had "been engaged by the Office of the County Counsel" to investigate him for allegedly retaliating against a sergeant in the sheriff's department who had faced oversight scrutiny. Kennedy has denied any wrongdoing, claiming the probe against him is politically motivated.

In an email this week, Kennedy described Bonner's removal as "the death-knell for meaningful civilian oversight of the LASD." He claimed that the Board of Supervisors "supports the sheriff in preventing the commissioners from accessing confidential documents to do their job."

Barger's office pushed back against the criticism, pointing to correspondence from Bonner earlier this year that the supervisor's office said suggested he was willing to step down.

In an April 18 email to Barger, Bonner wrote that "if you decide not to reappoint me, please be assured that I am fine with that."

Chavez, Barger's spokesperson, questioned the "stark contrast" between "his posture and tone" then compared with Bonner's recent public remarks.

Bonner told The Times he followed up his April 18 email to express that he "wanted to be extended" to achieve his goals as chair.

"I never wanted to her to think I lusted for the job," Bonner said in a text message.

The abrupt departures of Bonner and Kennedy have raised concerns about who will fill the void they leave behind.

The Civilian Oversight Commission voted on Thursday for the body's co-vice chair, Hans Johnson, to fill Bonner's shoes when his time in the role concludes on July 17.

"The loss of Rob and Sean, who were deeply committed to getting to the bottom of problems in the sheriff's department, is a blow to the county," said Bert Deixler, former special counsel to the oversight commission. "These were two special guys who knew what they were talking about. Long, long history."

Deixler attributed the turmoil to "political machinations" within the county and decried the move to replace Bonner.

"I just can't understand it," he said. "There couldn't be a merits-based reason for making that decision."

At the commission's meeting Thursday, Bonner listed several goals he had hoped to accomplish before his time as chair ends. His priorities included bolstering the board's ability to conduct effective oversight and compelling a commitment by Sheriff Robert Luna to enact a ban on deputy gangs and cliques.

It's not yet clear how Bonner's dismissal will affect those plans.

"I'm leaving," he said. "You guys have got to pick up the ball here after July 17."

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