Sabrina Patterson's injuries were among the most severe a pathologist has seen in the 3,000 autopsies he has conducted. ((Sabrina Patterson memorial site))

Sabrina Patterson was strangled to death and possibly raped, a pathologist testified at Fred Prosser's murder trial on Tuesday.

Prosser, 33, of Shenstone, is charged with first-degree murder, sexual assault causing bodily harm and sexual assault in the 2010 death of Patterson, his ex-girlfriend.

The Crown alleges Prosser sexually assaulted Patterson, a 25-year-old mother of two from Riverview, and strangled her to death.

Dr. Kalman Protzner, who conducted the autopsy on Nov. 7, 2010, told the jury he saw physical signs that Patterson had been severely assaulted — both physically and sexually.

Her attacker probably used a blunt object, Protzner said, adding that he has only seen one other case as severe as Patterson's in the estimated 3,000 autopsies he conducted during his career.


Fred Prosser is charged with first-degree murder in the 2010 death of Sabrina Patterson. (CBC)

The Moncton courtroom was silent during Protzner's testimony until one person looked over at the accused and cried out: "He's a sick man, a sicko."

Patterson's family members kept their heads down, clutching tissues and wiping away tears.

Protzner, who is now retired, said he also examined Patterson's skull and throat and noticed several bruises and internal bleeding.

Given the location of the bruises, he believes she was strangled from the front, he said.

Patterson went missing on Oct. 29, 2010. Her body was found in a wooded area near Shenstone on Nov. 6, 2010.

Five weeks have been set aside for the trial. The Crown expects to call its final two witnesses on Wednesday.