TORONTO - Ontario's top court has reserved its decision on whether to open up the divorce proceedings of convicted sex killer Russell Williams to public scrutiny.

Lawyers representing the estranged wife of Williams and a coalition of news agencies made their arguments in court Tuesday regarding a sweeping publication ban on the divorce proceedings.

A lower court judge has banned the publication of a wide range of details relating to the former colonel's wife, including her name, address and contact information, the name of her employer, her income and expenses and medical information.

Lawyers representing the estranged wife of Williams had requested the publication ban, arguing that opening the proceedings to the public would cause her even greater harm than she has already experienced.

The ban also covers a domestic deal the couple signed about six weeks after Williams was charged with two counts of first-degree murder in the deaths of two eastern Ontario women.

Williams was a rising star in the military and commander at Canadian Forces Base Trenton before being sentenced to life in prison for the murders, two sexual assaults and dozens of fetish break-ins.