KINGSTON - An Ontario court is hearing that a man accused of killing his three daughters and one of his two wives told a police interrogator that his kids were liars.

Mohammad Shafia, 58, is on trial -- along with his wife and son -- charged with four counts each of first-degree murder.

Three teenage Shafia sisters, Zainab, 19, Sahar, 17, and Geeti, 13, along with Shafia's other wife, Rona Amir Mohammad, 50, were found dead inside a submerged car in June 2009 in the Rideau Canal.

The jury in Kingston, Ont., is watching today the video of the police interrogation of Shafia, the day after he, his wife and his son were arrested in July 2009.

He tells the interrogator his life has been ruined by the deaths of his children and Rona Amir Mohammad, whom he calls his cousin, and that his kids were pure and sinless.

But he also says his children told authorities he was beating them, and that they were all liars.