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Hudak claimed Wynne could “no longer be trusted to run Ontario,” and called on NDP Leader Andrea Horwath to “make the right decision” and withdraw support from the Liberal government.

Earlier in the day, Horwath said she finds it “unbelievable” that Wynne didn’t know about what was going on in the premier’s office.

But she wouldn’t rule out propping up the Liberals by supporting their budget — as her party has done for the past two years — despite the new allegations.

The search warrant — which contains allegations not proven in court — was part of a provincial police probe of the unlawful deletion of government emails concerning two gas plants that were cancelled by the Liberals ahead of the 2011 election.

Wynne says that if the latest allegations are true, they are “very disturbing.”

She distanced herself from her predecessor and emphasized that Livingston has never been a member of her staff.

But Hudak said Wynne “must have known about” what happened.

It happened under her watch. She’s got to be held accountable

“Who ordered the coverup?” he said. “It happened under her watch. She’s got to be held accountable.”

Police allege that during the transition period after McGuinty had resigned from office under a cloud of allegations over the cancellation of gas plants in Mississauga and Oakville, Livingston arranged to get special computer access so that one user would be able to access the computer profiles of the entire premier’s office.

Livingston allegedly had to go through bureaucratic hurdles and the incredulous questioning of staff to get this special high-level clearance — the kind of access usually reserved for IT staff.