EDMONTON - The lawyer for a man on trial in the deaths of two Alberta prostitutes is questioning the testimony of the accused's sister.

Donna Parkinson told the judge hearing Thomas Svekla's case on Monday that her brother came home about a week before a woman's body was found and said he had done a "bad thing."

She also said he was covered with scratches so deep they couldn't have been made by a cat or bushes.

But defence lawyer Robert Shaigec pointed out that Parkinson initially told police the scratches were very fine and looked like they had been made by a feline.

Shaigec also pointed to other discrepancies in what Parkinson has said about her brother's appearance in the days before Rachel Quinney's remains were found.

Svekla is charged with second-degree murder in the deaths of Quinney, 19, who was found in a field east of Edmonton, and Theresa Innes, 36, whose body was stuffed in a hockey bag Parkinson found in Svekla's truck.