Former political advisor Mark Stobbe faced a barrage of questions from the Crown on Tuesday.

Stobbe is accused of killing his wife Beverly Rowbotham in October 2000.

During his fourth day on the stand, Stobbe's credibility and weight were called into question.

Stobbe told the jury he currently weighs more than 300 pounds and is often told to go on a diet.

The Crown, Wendy Dawson, alleges Stobbe killed his wife with a hatchet in the couple's St. Andrews backyard and then drove 15 km to dump her body in Selkirk, before bicycling back home.

Stobbe has testified he isn't sure if he'd be able to ride a bicycle that far of a distance.

The prosecution then moved on to take aim at Stobbe's credibility, arguing there are 19 details he left out from his police statement taken more than 11 years ago, including now mentioning details about putting a garden hose away for the winter in the days leading up to the murder.

The Crown believes Stobbe used the hose to wash away evidence in the backyard.

Stobbe said he remembers details now and didn't tell police back then because they never asked.

On the stand, Stobbe stared mostly at the jury, rather than the Crown.

When grilled with questions about details and his memory, Stobbe twice made reference to Goldilocks.

"Here, I feel like Goldilocks' porridge again," said Stobbe, a comment that appeared to be directed at Dawson's questioning.

Dawson grilled Stobbe on his statement that he was asleep in the living room during his wife's attack, which DNA evidence suggests was in the backyard.

"You would have been able to hear her yell," Dawson said.

"I don't know if she yelled. I don't know if she was prevented from yelling. All I can say is that I did not hear her yell.

"I sure wish I could have ... but I didn't."

Dawson said it would be impossible not to hear a deadly attack.

"You say that because she was not attacked by anyone but you," Dawson said.

"She was not attacked by me," Stobbe replied.

He is slated to be back on the stand in court on March 14. 

- with a report from CTV's Stacey Ashley and files from The Canadian Press