TORONTO - Court documents allege the Ontario Liberal party paid the spouse of a top aide to Dalton McGuinty $10,000 to wipe computer hard drives in the premier's office.

The allegation is contained in police documents used to obtain a search warrant that was executed in November at an Ontario government cyber security office in downtown Toronto.

The warrant is part of an OPP investigation into deleted documents on the Liberals' decision to cancel two gas plants prior to the 2011 election, at a cost to taxpayers of up to $1.1 billion.

Det.-Const. Andre Duval of the OPP's anti-rackets branch alleges that computer expert Peter Faist was asked by his spouse, Laura Miller, "to wipe off personal data on approximately 20 desktop computers in the premier's office."

Miller was McGuinty's deputy chief of staff under David Livingston, who is being investigated by the OPP for alleged breach of trust.

No charges have been laid, and Livingston has insisted he has done nothing wrong. Lawyers representing Miller and Faist said they too did nothing wrong.