Family in Canada guilty of honor killings KINGSTON, Ontario - A jury on Sunday found an Afghan father, his wife and their son guilty of killing three teenage sisters and a co-wife in what the judge described as "cold-blooded, shameful murders" resulting from a "twisted concept of honor." The jury took 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 in a case that shocked and riveted Canadians from coast to coast. First-degree murder carries an automatic life sentence with no chance of parole for 25 years. After the verdict was read, the three defendants again declared their innocence in the killings of sisters Zainab, 19, Sahar 17, and Geeti, 13, as well as Rona Amir Mohammad, 52, Shafia's childless first wife in a polygamous marriage. Their bodies were found June 30, 2009, in a car submerged in a canal in Kingston, Ontario, where the family had stopped for the night on their way home to Montreal from Niagara Falls, Ontario. Prosecutors said the defendants allegedly killed the three teenage sisters because they dishonored the family by defying its disciplinarian rules on dress, dating, socializing and going online. Shafia's first wife was living with him and his second wife. The polygamous relationship, if revealed, could have resulted in their deportation. The prosecution alleged it was a case of premeditated murder, staged to look like an accident after it was carried out. Prosecutors said the defendants drowned their victims elsewhere on the site, placed their bodies in the car and pushed it into the canal. Defense lawyers said the deaths were accidental. They said the Nissan car accidentally plunged into the canal after the eldest daughter, Zainab, took it for a joy ride with her sisters and her father's first wife. Hamed said he watched the accident, although he didn't call police from the scene. After the jury returned the verdicts, Mohammad Shafia, speaking through a translator, said, "We are not criminal, we are not murderer, we didn't commit the murder and this is unjust." His weeping wife, Tooba, also declared the verdict unjust, saying, "I am not a murderer, and I am a mother, a mother." Their son, Hamed, speaking in English said, "I did not drown my sisters anywhere."