DEDHAM, Mass. (AP) — The second murder trial of Karen Read, whose case has sparked a national debate on police accountability and won her legions of devoted fans, began Tuesday with opening statements addressing theories about how her Boston police officer boyfriend ended up dead.

Read is accused of striking John O’Keefe with her SUV in 2022 and leaving him to die alone in the snow outside of a house party in the town of Canton, a suburb about 20 miles (32 kilometers) south of Boston. She has been charged with second-degree murder, manslaughter while operating a vehicle under the influence and leaving the scene.

During the first trial last year, prosecutors said Read intentionally backed into O’Keefe after she dropped him off at a house party and returned hours later to find him dead. The defense said she was a victim of a vast police conspiracy and that O’Keefe was fatally beaten by another law enforcement officer at the party.

A mistrial was declared last year after jurors said they were at an impasse and deliberating further would be futile. A new prosecutor, Hank Brennan, is heading the state's case for the retrial.

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Defense says O'Keefe wasn't hit by Read's car

Read’s defense team used its opening statement to describe her as a victim of a cover-up and to stress that she didn’t kill O’Keefe.

“At the end of the day folks, there was no collision with John O’Keefe,” her attorney Alan Jackson said.

Jackson said the case will show that O’Keefe wasn’t hit by Read’s car. He acknowledged that O’Keefe’s death was a “tragic loss,” but said the investigation was corrupted by bias and deceit.

“The evidence in this case will establish ... above everything else three points — there was no collision with Jon O’Keefe. There was no collision. There was no collision,” Jackson said. “John O’Keefe did not die from being hit by a vehicle. The facts will show that. The evidence will show that. The data will show that. The science will show that and the experts will tell you that.”

Prosecutor says Read's relationship with O'Keefe was deteriorating

Read and O’Keefe were headed to the end of their relationship before O’Keefe died, Brennan said.

He described how the couple’s relationship was faltering before O’Keefe died. They were arguments a few days before O’Keefe was killed and that O’Keefe had asked Read to leave, he said.

Brennan said text messages will be presented showing the tension between the couple and how Read would become irate when her calls weren’t returned.

“You will read those text messages and you will realize this was the beginning of the end of this relationship,” he told the jurors.

Prosecutor describes O’Keefe as ‘family man’

Brennan told the jury that O’Keefe was a “family man” who was a pillar of his community and was much more than just a police officer.

O’Keefe was a single parent of two children whom he adopted when his sister and her husband died within months of each other, Brennan said. Brennan said he cared for the children as if they were his own and provided them stability and love.

O’Keefe’s tumultuous relationship with Read changed all that, Brennan said.

“They led a good life,” Brennan said. “Enter Karen Read.”

New prosecutor makes opening statements

Brennan began opening statements by describing the scene where O’Keefe was found dead.

He opened by describing how firefighters and paramedics got a call about a cardiac arrest. They jumped into the ambulance and headed out in near blizzard conditions. Their ambulance was sliding along the road and they couldn’t hear anything beyond the sound of the siren.

Arriving at 34 Fairview Road, they came upon a chaotic scene.

“He stepped out into bedlam,” Brennan said. “He heard a woman screaming.”

They came upon Karen Read, who he said told paramedics, “I hit him, I hit him.”

“It was at that time in the words of the defendant that she admitted what she had done that night, that she hit John O’Keefe,” Brennan said.

JUST IN: Opening statements begin in Karen Read’s second murder trial three years after police officer boyfriend’s death

Judge addresses the high profile nature of the trial

The judge addressed the heavy public interest in the trial before opening statements began.

Judge Beverly Cannone told the jury to ignore public comment about the trial while it is going on. She also told jurors it’s important not to conduct independent research or look at news coverage of the trial.

“You will decide what the facts are, where the evidence is contested, you will determine where the truth lies,” she said. “This trial will be decided by you, an independent jury.”

Cannone also told the jury not to use social media during the trial.

Jurors enter the courtroom, receive instructions and hear the charges

The jurors have entered the courtroom and received their instructions for the trial.

After giving them the instructions, the judge asked if they had refrained from discussing the case or doing any independent research about it.

The court also heard the charges against Read.

The judge addresses attorney motions

Judge Beverly Cannone said she received four motions over the weekend that need to be addressed.

She ruled that the defense can’t mention a consulting firm in their openings, which led the defense to request to be heard. They then entered into a sidebar with the defense arguing the firm should be mentioned.

The courtroom is packed, with little room for anyone other than essential court personnel and media.

The retrial will happen in the same tiny courtroom used for her first trial

The trial seats about 10 people on both sides. Read’s family is on one side and the O’Keefe’s are on the other – about 10 on each side.

Read could be seen chatting and smiling with her attorneys Alan Jackson and David Yannetti. Reporters are behind them, sitting on stools.

Security is tight around the courthouse

Barriers are set up on both sides of the street in front of the building. Several state troopers and police officers are also positioned around the courthouse.

Police ordered a truck driver who slowed down to yell “Free Karen Read” to move along, and also chased off someone who was shooting video with their phone.

Read arrives at court

Read arrived at court just before 8:50 a.m. to some cheers from assembled supporters.

Family members from both sides also arrived just before 9 a.m.

Read smiled briefly as she entered the court. She did not answer a question about whether she was ready for her second trial.

The court had a police presence to try to maintain order as supporters gathered outside.

Read supporters gather outside court

Supporters of Karen Read have assembled outside court in advance of her new trial.

The scene among supporters is similar to a reunion, with people hugging one another and calling out their names.

Ashlyn Wade, a Read supporter from Canton, where John O’Keefe was killed, said she was there to hopefully see Read cleared of charges.

“I’m here for justice,” she said. “The murderer going to jail and Karen being Exonerated — that would be justice.”

Dennis Sweeney, dressed as the judge in the case and wearing a pink T-shirt emblazoned with the word “assassin.” which was inspired by Read’s defense team, said he returned for the second trial because: “Karen Read is factually innocent and we want her freed.”

Judge Beverly Cannone listens in Norfolk Superior Court during Karen Read's trial on Tuesday, April 22, 2025 in Dedham, Mass. (Stuart Cahill /The Boston Herald via AP, Pool)

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Prosecutor Hank Brennan arrives for the trial of Karen Read at Norfolk Superior Court, Tuesday, April 22, 2025, in Dedham, Mass. (AP Photo/Charles Krupa)

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Supporters of Karen Read gather on the steps at Norfolk Superior Court prior to Read's trial, Tuesday, April 22, 2025, in Dedham, Mass. (AP Photo/Charles Krupa)

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Karen Read arrives with her defense team for her trial at Norfolk Superior Court, Tuesday, April 22, 2025, in Dedham, Mass. (AP Photo/Charles Krupa)

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Karen Read arrives with her defense team for her trial at Norfolk Superior Court, Tuesday, April 22, 2025, in Dedham, Mass. (AP Photo/Charles Krupa)

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Karen Read arrives with her defense team for her trial at Norfolk Superior Court, Tuesday, April 22, 2025, in Dedham, Mass. (AP Photo/Charles Krupa)

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Karen Read arrives with her lead defense attorney Alan Jackson, left, for her trial at Norfolk Superior Court, Tuesday, April 22, 2025, in Dedham, Mass. (AP Photo/Charles Krupa)

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Supporters of Karen Read gather outside Norfolk Superior Court prior to Read's trial, Tuesday, April 22, 2025, in Dedham, Mass. (AP Photo/Charles Krupa)

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Supporters of Karen Read gather on the steps at Norfolk Superior Court prior to Read's trial, Tuesday, April 22, 2025, in Dedham, Mass. (AP Photo/Charles Krupa)

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Supporters of Karen Read gather on the steps at Norfolk Superior Court prior to Read's trial, Tuesday, April 22, 2025, in Dedham, Mass. (AP Photo/Charles Krupa)

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