For 15 years, Robert F. Kennedy’s assassin was denied parole by a California parole board that maintained Sirhan Sirhan did not show adequate remorse or understand the enormity of his crime that rocked the nation and the world in 1968.

But on Friday, the two-person panel said he appeared to be a different man, even from his last hearing in 2016, and granted the 77-year-old prisoner parole. Two of RFK’s sons, going against several of their siblings’ wishes, said they also supported releasing him and prosecutors declined to argue he should be kept behind bars. But the governor ultimately will decide if he leaves prison.

The board found Sirhan no longer poses a threat to society, noting that he had enrolled in more than 20 programs including anger management classes, Tai Chi and Alcoholics Anonymous meetings, even during the coronavirus pandemic.

“We think that you have grown,” Parole Board Commissioner Robert Barton said.

Douglas Kennedy was a toddler when his father was gunned down in 1968. He told a two-person board panel that he was moved to tears by Sirhan’s remorse and that Sirhan should be released if he’s not a threat to others.

“I’m overwhelmed just by being able to view Mr. Sirhan face to face,” he said. “I’ve lived my life both in fear of him and his name in one way or another. And I am grateful today to see him as a human being worthy of compassion and love.”

Six of Kennedy’s nine surviving children, however, said they were shocked by the vote. They urged Gov. Gavin Newsom, who is facing a recall election in California, to reverse the parole board’s decision and keep Sirhan behind bars.

“He took our father from our family and he took him from America,” the six siblings wrote in a statement late Friday. “We are in disbelief that this man would be recommended for release.

The statement was signed by Joseph P. Kennedy II, Courtney Kennedy, Kerry Kennedy, Christopher G. Kennedy, Maxwell T. Kennedy and Rory Kennedy.

But another sibling, Robert F. Kennedy Jr., has spoken in favor of his release in the past and wrote in favor of paroling Sirhan. He said in the letter that he met him in prison and was moved by Sirhan, “who wept, clinching my hands, and asked for forgiveness.

“While nobody can speak definitively on behalf of my father, I firmly believe that based on his own consuming commitment to fairness and justice, that he would strongly encourage this board to release Mr. Sirhan because of Sirhan’s impressive record of rehabilitation,” he said in a letter submitted during the hearing to the board.

Sirhan, whose hair is white, smiled, thanked the board and gave a thumbs-up after the decision to grant parole was announced. It was a major victory in his 16th attempt at parole after he’s served 53 years. But it does not assure his release.

The ruling will be reviewed over the next 120 days by the board’s staff. Then it will be sent to the governor, who will have 30 days to decide whether to grant it, reverse it or modify it. If Sirhan is freed, he must live in a transitional home for six months, enroll in an alcohol abuse program and get therapy.

Robert F. Kennedy was a U.S. senator from New York and the brother of President John F. Kennedy, who was assassinated in 1963. RFK was seeking the Democratic presidential nomination when he was gunned down at the Ambassador Hotel in Los Angeles moments after delivering a victory speech in the pivotal California primary. Five others were wounded.

Sirhan, who insists he doesn’t remember the shooting and had been drinking alcohol just beforehand, was convicted of first-degree murder. He was sentenced to death after his conviction, but that sentence was commuted to life when the California Supreme Court briefly outlawed capital punishment in 1972.

Some of Kennedy’s children and others have called for a reinvestigation of the killing, believing there was a second shooter who got away.

While on Friday, Sirhan again said he didn’t recall the killing, he made multiple attempts to show nonetheless he takes responsibility for the harm he caused.

“Sen. Kennedy was the hope of the world … and I harmed all of them and it pains me to experience that, the knowledge for such a horrible deed, if I did in fact do that,” said Sirhan, appearing on camera from a San Diego County prison at the virtual proceeding, wearing his blue prison uniform, a paper towel folded as a handkerchief peeking from his shirt pocket.

Barton said that was progress.

“We saw the improvement that you’ve made, and all of the other mitigating factors, and we did not find that your lack of taking complete responsibility” for the crime as proof of currently being dangerous to society, Barton said.

Because of laws passed in 2018, the board was required to take into account this time the fact that he had suffered childhood trauma from the conflict in the Middle East, committed the offense at a young age and is now an elderly prisoner.

The board found that despite the magnitude of the crime, he wasn’t likely to reoffend and didn’t pose an unreasonable threat to public safety.

“Not withstanding its atrocity, its impact, not just on the families and the victims and the nation as a whole and perhaps the world as a whole — if you were sentenced to life without parole that would be a different matter, but you were sent to life with parole,” Barton said.

Barton said the board’s decision was not influenced by the fact that prosecutors did not participate or oppose Sirhan’s release under a policy by Los Angeles County District Attorney George Gascón, a former police officer who took office last year after running on a reform platform. Gascón, who said he idolized the Kennedys and mourned RFK’s assassination, believes the prosecutors’ role ends at sentencing and they should not influence decisions to release prisoners.

“Obviously they opposed in the past and even if they had opposed it today, our decision would be the same,” Barton said.

The Los Angeles Police Department, relatives of some of the victims and members of the public submitted letters opposing Sirhan’s release.

The California District Attorneys Association denounced the prosecution’s absence.

“This is one of the most notorious political assassinations in American history and the killer is being considered for release without benefit of a representative on behalf of the people of California. That is disgraceful,” El Dorado County District Attorney Vern Pierson, the association’s president, said.

Sirhan’s lawyer, Angela Berry, had urged the board to base its decision on who Sirhan is today and not what he did more than 50 years ago.

Sirhan said he had learned to control his anger and was committed to living peacefully.

“You have my pledge. I will always look to safety and peace and non-violence,” he told the panel.

Sirhan, a Christian Palestinian from Jordan, has acknowledged he was angry at Kennedy for his support of Israel. When asked about how he feels about the Middle East conflict today, Sirhan broke down crying and temporarily couldn’t speak.

“Take a few deep breaths,” said Barton, who noted the conflict had not gone away and still touched a nerve.

Sirhan said he doesn’t follow what’s going on in the region but thinks about the suffering of refugees.

“The misery that those people are experiencing. It’s painful,” Sirhan said.

If released, Sirhan could be deported to Jordan, and Barton said he was concerned he might become a “symbol or lightning rod to foment more violence.”

Sirhan said he was too old to be involved in the Middle East conflict and would detach himself from it.

“The same argument can be said or made that I can be a peacemaker and a contributor to a friendly nonviolent way of resolving the issue,” said Sirhan, who told the panel that he hoped to live with his blind brother in Pasadena, California.

Paul Schrade, a union leader and aide to RFK who was among five people wounded in the 1968 shooting, also spoke Friday in favor of Sirhan’s release.