Karen Read's defense presents expert testimony that Officer O'Keefe's fatal injuries resulted from falling backward, with facial wounds caused by a separate impact.

Autopsy photo of John O’Keefe’s injured arm with multiple wounds. AP The couple reportedly had a rocky relationship before the fateful night.

Alan Jackson, defense lawyer Dr. Elizabeth Laposata, forensic pathologist 10:50 a.m. - Arm injuries consistent with animal bite Laposata said she observed a pattern injury on O’Keefe’s right arm.

In a hearing without jurors present, Judge Beverly Cannone ruled that Laposata's credentials did not qualify her to testify about potential dog bites as a source of injuries to O'Keefe's arm, and ...

A defense dog bite expert who testified on Monday that she believes a dog attacked John O’Keefe at a home in Canton where he was found dead returned to the stand for most of Tuesday before a new ...

Judge Beverly Cannone ruled Laposata was unqualified to testify about whether markings found on O'Keefe's arm are consistent with dog bite wounds, but he can discuss other topics.

Karen Read‘s second trial in connection with the death of her boyfriend, Boston police officer John O’Keefe, continued on Monday in Dedham’s Norfolk Superior Court before Judge Beverly Cannone.

Judge Beverly Cannone ruled Laposata was unqualified to testify about whether markings found on O'Keefe's arm are consistent with dog bite wounds, but he can discuss other topics.

Judge Beverly Cannone ruled Laposata was unqualified to testify about whether markings found on O'Keefe's arm are consistent with dog bite wounds, but he can discuss other topics.

Judge Beverly Cannone ruled Laposata was unqualified to testify about whether markings found on O'Keefe's arm are consistent with dog bite wounds, but he can discuss other topics.

Her defense team has long argued Read was framed for O’Keefe’s murder. They say cops at the house party beat O’Keefe out of jealousy over his relationship with Read, let a dog attack him and ...