Pictures of a three-year-old foster child showing bruises on his neck, back, arms and legs were entered into evidence Tuesday at the trial of the woman accused of killing him.

Lily Choy, 36, is on trial for second-degree murder in the boy's death. She was his foster mother at the time he died from a brain injury in January 2007.

The pictures of the boy were taken while he was in hospital and during his autopsy. He cannot be identified under provincial child welfare legislation.

The Crown alleges the child received the injuries as a result of extreme forms of discipline by Choy. But the defence suggests the boy hurt himself because he was clumsy and would come home with bruises after visiting his father.

Pediatrician Dr. Kan Lee examined the boy days before he died and said the child would say things like "Daddy hurt me. Daddy bad."

But under cross-examination by Crown prosecutor Allison Downey-Damato, Lee said he was given that information by Choy.

The boy seemed to have a positive relationship with Choy while they were in his office, Lee told the court. He said the boy twice reached out his arms to Choy to get a hug from her.

This is the second time Choy has been on trial. She was convicted of manslaughter in a November 2008 conviction. The Alberta Court of Appeal overturned the conviction and ordered a new trial last year.

Her current case is being heard by judge alone.

With files from the CBC's James Hees