An Afghan father, his wife and their son have been jailed for life after a jury found them guilty of killing three teenage sisters and a co-wife in what the judge described as a ‘despicable’ and ‘heinous’ crime.

The jury had taken 15 hours to find Mohammad Shafia, 58, his wife Tooba Yahya, 42; and their son Hamed, 21, each guilty of four counts of first-degree murder.

The four bodies were found in June 2009 in a car submerged in a canal in Kingston, Ontario, where the family had stopped for the night on their way home from Niagara Falls.

Prosecutors said the daughters were killed because they dishonored the family by defying rules on dress, dating, socialising and going online.

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