A crime scene consultant concluded Sawyer Robison did not kill his uncle during a standoff with RCMP in February in which two officers were wounded, Robison's father told CBC News.

Ray Robison said a forensics report written by an Edmonton Police Service blood splatter expert states that his son could not have killed his uncle.

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Sawyer Robison is accused in the shooting of two RCMP officers. (CBC)

The report, paid for by Sawyer Robison's defence,  was written by Det. Joe Slemko as a private forensic consultant and shown to CBC News by Robison's father. 

The case is the subject of a premlinary inquiry a Camrose, Alta., courtroom to see if there's enough evidence to proceed to trial. That hearing wraps up today.

Brad Clarke was found dead in his house after a shootout near Killam, Alta., southeast of Edmonton.

Sawyer Robison was able to slip away from the scene, but was arrested three days later after a public plea from his parents to turn himself in.

Robison, 27, is facing two counts of attempted murder and 15 weapons charges in connection with the Feb. 7 shooting of RCMP constables Sheldon Shah and Sidney Gaudette. Both officers have since returned to duty.

In October Sawyer Robison was charged with murdering his uncle, a surprising turn in the case that "flabbergasted" his father.

"He wouldn't do it," Ray Robison told CBC News Thursday morning. "He'd have no motive to do it."

Clarke was like a second father to Sawyer, he said.

He pointed to the report which looked at all the evidence gathered by RCMP.

He said that in the report Slemko rejects the theory of the Crown and RCMP that Sawyer Robison pointed a gun at his uncle and pulled the trigger.

Slemko's report instead concludes Clarke took his own life with a handgun, which is exactly what the younger Robison said before being arrested, said Robison.

The report also concludes:

  • Clarke had already sustained two gunshot wounds
  • Clarke was found in a semi-seated laying position
  • He held a 40-calibre Glock in his right hand
  • He discharged the firearm into the right side of his head
  • The DNA on the grip was Clarke's, not Robison's

Robison said he anticipates justice will prevail at his son's trial.

"I certainly hope so," he said. "Sawyer's confident that it will."

The RCMP will not comment on the report.

Sawyer Robison was released on bail Friday morning. 

With files from Janice Johnston