Karen Read’s lead defense attorney, Alan Jackson, called on jurors to find her not guilty on Friday. In his closing argument, he challenged the prosecution’s timeline concerning the events on the night Boston Police Officer John O’Keefe passed away in Canton, a suburb approximately 20 miles south of Boston.

Read, 45, faces allegations of hitting her 2021 Lexus SUV against her 46-year-old former partner, leaving him on the ground to succumb to the freezing blizzard conditions on January 29, 2022.

“There was no collision,” Jackson told jurors. “There was no collision. There was no collision.”

Both Read’s defense team and the prosecutor, Brennan, are anticipated to intensify their efforts as they aim to persuade jurors with their starkly different narratives about what transpired with O’Keefe. The defense argues that her vehicle did not come into contact with him.

Read faces 15 years to life in prison if convicted on the top charge of second-degree murder. If convicted of drunken driving manslaughter, she would face 5 to 20.