01/20/2012 10:37 EST | Updated 03/21/2012 05:12 EDT

Closing arguments in Shafia family murder trial delayed by one day

KINGSTON, Ont. - Closing arguments in the trial of three people accused of killing half of their family over honour have been delayed one day.

The final submissions in the Shafia trial were scheduled to start Monday in Kingston, Ont., but have now been postponed until Tuesday.

The arguments from the Crown and the three defence lawyers are expected to take two days and the judge is then expected to spend one day giving the jury final instructions.

Mohammad Shafia, 58, his wife Tooba Yahya, 42, and their son Hamed, 21, have been on trial since Oct. 20 and have each pleaded not guilty to four counts of first-degree murder.

They're accused of killing Shafia sisters Zainab, 19, Sahar, 17, Geeti, 13, and Shafia's first wife in a polygamous marriage.

The bodies were found June 30, 2009, in a car at the bottom of a canal in Kingston, where the Montreal family had stopped on their way home from a trip to Niagara Falls, Ont.