Couple attempting to overturn convictions in son's meningitis death heading to Supreme Court in May

The Supreme Court of Canada has set a tentative date to hear arguments as parentsconvicted in their toddler son's meningitis death in southern Alberta continuethe fight to have their convictions overturned.

Collet and David Stephan lived in Lethbridge when their19-month-old son, Ezekiel, died in 2012. They will be asking for the country's highest court to either overturn their convictions or order a new trial.

The Stephans, whonow liveinNelson, B.C.,were convicted offailing to provide the necessaries of life to their son following a trial in 2016.

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Jurors heard the Stephans treated their son with natural remedies and homemade smoothies containing hot pepper, ginger root, horseradish and onion.

The Stephansrefused to take the boy to a doctoreven when he became so stiff he couldn't sit in his car seat.

Only when Ezekiel stopped breathingdid the parents call 911. After days of being ill, he was eventually rushed to a local hospital but died after being transported toCalgary.

In November, theAlberta Appeal Court upheld the convictions. But because one of the three judges disagreed and found the couple should have been granted a new trial, the Stephans had automatic leave to have the Supreme Court of Canadahear arguments.

The Supreme Courtwill hear arguments May 15, 2018.

Prosecutors arestill asking the Alberta Court of Appeal to increase the couple's sentences. David was given four months in jail whileColletwas given three months of house arrest. A date for those arguments has not yet been set.