Karen Read: What to know about the murder trial as jury deliberates

Ms Read did not take the stand as part of her defence.

Instead, her lawyers argued that she was framed, and that investigators had inappropriate relationships with witnesses and others involved in the case.

The defence claimed Mr O’Keefe was beaten inside the house party and later dragged outside where he was found.

Much of the case they presented focused on what the defence called a poorly done investigation into O’Keefe’s death by local law enforcement.

Some of the investigators who oversaw the case knew the police officers who attended the house party that January night, the defence claimed.

For example, the lead investigator, Massachusetts State Trooper Michael Proctor, admitted he was friends with the the Boston police office who hosted the party where Mr O’Keefe died.

Ms Read was a “convenient outsider” who was targeted to ensure investigators did not look at other suspects, the defence alleged.

Among the witnesses who took the stand as part of the defence’s case was a retired forensic pathologist, Dr Frank Sheridan.

He claimed that Mr O’Keefe’s body would have had more bruising if it were hit by a heavy vehicle, according to the Associated Press.