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John O’Keefe died from the fall back and hit his head on frozen soil, according to the brain of education, which testified on Wednesday in the murder trial From Karen Read.
Read, 45, he was charged with killing his then boyfriend, a 46-year-old O’Keefe, hitting him with his 2021 Lexus SUV 29 January 2022, and then left him to die on Earth in Blizzard in Kanton in Massachusetts, about 20 miles south of Boston.
The trauma of the head and fractures of the skull he endured, along with the hypothermia from the cold, would not have killed him immediately, said Dr. Aizik Wolf, who testified that he had treated many similar career injuries working in Minneapolis.
“The only way he could get this type of injury was to fall backwards, hit him in the back of his head, and then resulted in energy forces into his brain, at the skull base,” jury said during the examination of a special prosecutor Hank Brennan.
Karen read the testimony faces a brutal cross -examination of vehicles data

The brain surgeon Dr. Aizik Wolf testifies to John O’Keefe’s injuries during the Karen Read murder trial at Norfolk Superior Court in Dedham, Massachusetts, May 21, 2025. (Greg derr/Patriot Ledger via AP/pool)
O’Keefe suffered “a classic wicked trauma injury,” Wolf said.
O’Keefe fell backwards and hit his head, Wolf said, and the strength of the impact broke his skull and later resulted in “Rakun’s eyes”, which looks like black eyes.
“This happens when soft tissue hits solid soil,” he testified.
The swelling in the victim’s brain would kill him in normal circumstances, usually within 24 to 48 hours, Wolf states. Some victims died in just one to three.
In January, Nor’easter, O’Keefe’s body temperature was also tank. When the paramedics found it at 6 o’clock in the morning, its temperature was only 80 degrees, under the threshold of what medical professionals call “severe hypothermia.”

Karen Read, Right, and lawyer Elizabeth Little discussing development during the May 21, 2025 reading trial. (Greg derr/Patriot Ledger via AP/pool)
Wolf said he had treated many patients with similar injuries at the beginning of his career, when he worked at a trauma center in Minneapolis. The city can be brutally cold during the winter. Many wounds were fatal. Some were inflicted with drunk patients who slid on ice. Others involved people who fell after they had suffered a heart attack.
“This testimony of Dr. Wolf sets the argument of Commonwealth for point 2, inadvertent accusation of murder“Said Grace Edwards, and Massachusetts Defense Attorney Who Is Following The Case.” The Commonwealth Will Argue to the Jury That Ifi Cannot Find That Karened Caused John O’Keefe’s Death Intention, Counts 1 and 3 of Him and the leaving Him Injured Was the Wanton and Reckless ACT, Which Contributed to His Death, then they Should Find Karen Read Guilty of Count 2. “

Karen Read and John O’Keefe (Karen Read)
According to Wolf’s biological in Miami Neuroscience Center, he is the world’s leading authority in his area and director of the Clinic.
A short cross -examination of defenders Robert Alessia talked about the separate injuries that O’Keefe sustained, which were not associated with the trauma of the head that killed him.
“I thought Alessi’s lawyer did a good job, diverting Dr. Wolf from the back of his head to the front of his head and caused a testimony that these injuries were probably not out of the fall,” Edwards for Fox News Digital. “This supports the defense theory that John O’Keefe has not hit the vehicle and suggests that it is something else because of the separation on the face and injury of the hand, and the investigation has continued no other lead to determine that John O’Keefe sustained those injuries.”

State police technician Christina Hanley discusses evidence of glass fragment during the trial of Karen Read on May 21, 2025. (Greg derr/Patriot Ledger via AP/pool)
Wolf started the day at the booth. After testimony, Christina Hanley of Massachusetts state The crime police lab has returned to the witness booth. He is an expert on glass and plastic fragments that analyzed a broken cocktail glass located outside 34 Fairview Road and at the rear bumper of Read’s Lexus SUV, as well as pieces of broken rear light.
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Her testimony was interrupted on Tuesday at the early end of the day.

John O’Keefe (Police Directorate in Boston)
On Wednesday afternoon, she said that some of the plastic debris recovered from O’Keefe’s clothing “consistent” with materials used in reader Lexus, but could come from another source with similar characteristics.
During the cross -examination, she revealed that none of the broken glasses on Read’s bumper corresponded to a broken cocktail glass found in the yard near O’Keefe.
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Defender Alan Jackson explained that the only thing that any of the bumpers had matched was a sample of the glass recovered by former soldier Michael Proctor, who was released in March after an internal probe in inappropriate text messages he sent during the investigation.
Earlier at the trial, the defense reproduced a video showing Proctor standing near the back of the vehicle, out of view on the camera, while at the headquarters of the Police Directorate in Canton.
Proctor claimed through his family that his investigation was in line with evidence and conducted with integrity.
Reading could face life in prison if he is convicted of the main accusation, a second -degree murder. She has also been charged with drunken driving, murder and abandonment of a deadly accident.
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Fox News’ Andrew Fone contributed to this report.