A Crown appeal was heard in court on Thursday regarding the acquittal of an Alberta couple in the death of their toddler son.

An Alberta Crown appeal of a couple's acquittal in the death of their son is to be heard in Calgary on Thursday.

In his ruling, Justice Terry Clackson sided with an expert for the defence, who said the child died from a lack of oxygen and not bacterial meningitis.

The Crown is appealing the not guilty verdict in the case of an Alberta couple charged with not seeking medical help sooner for their sick toddler son.

The letter, from the Canadian Association of Nigerian Physicians and Dentists, is one of three complaints being investigated by the Canadian Judicial Council.

Dozens of medical and legal experts have filed a complaint against an Alberta judge, alleging he made comments that could be perceived as racist about a medical examiner from Nigeria.

A judge is to rule Thursday whether an Alberta couple who treated their son with herbal remedies rather than seek medical attention should be held responsible in his death.

David and Collet Stephan are on trial for a second time for allegedly failing to provide the necessaries of life to their 19-month-old son Ezekiel in 2012.

There were some very heated moments during testimony at the retrial of David and Collet Stephan on Thursday.

A father accused in his son's death testified Monday that the sick boy's condition worsened after he had appeared to be doing better, but not to the point where his parents were worried.