OTTAWA -- SNC-Lavalin (SNC.TO) warned federal prosecutors last fall about a possible plan to split the company in two, move its offices to the United States and eliminate its Canadian workforce if it didn't get a deal to avoid criminal prosecution, newly obtained documents show.

The documents, part of a PowerPoint presentation obtained by The Canadian Press, describe something called "Plan B" -- what Montreal-based SNC might have to do if it can't convince the government to grant a remediation agreement to avoid criminal proceedings in a fraud and corruption case related to projects in Libya.

Under that plan, SNC would move its Montreal headquarters and corporate offices in Ontario and Quebec to the U.S. within a year, cutting its workforce to just 3,500 from 8,717, before eventually winding up its Canadian operations.

"The government of Canada needs to weigh the public interest impact of the prosecution of SNC-Lavalin," the presentation reads.

"We must humbly ask whether the public interest is served to prosecute SNC-Lavalin, and to try to achieve a guilty verdict. Such a decision would effectively lead to the end of SNC-Lavalin as we know it today and has been for more than 100 years."

Of all the options for the future of the company, the plan in the presentation was the "most obvious" to follow and "well advanced" in terms of planning, say the documents, which the Privy Council Office confirmed receiving in late September, at the same time as prosecutors.

The company's board and senior management were prepared to quickly bundle parts of the business that had no role in the Libya case into a new entity, putting the "trio of possibly convicted entities" into another organization that would operate "on a reduced business level in Canada or heading into eventual wind-up," they read.

The details appear to contradict public statements by chief executive officer Neil Bruce, who has denied both that the company threatened to move its headquarters, and that the company cited its some 9,000 Canadian jobs as a reason the construction giant should be granted a remediation agreement.

The company walked back the comments days later in a statement, saying a remediation deal was the best path to protect its Canadian workforce.

In a March 20 interview with BNN Bloomberg, Bruce adamantly denied that he threatened to move the company’s headquarters from Montreal.

“I don’t know what people make up, or what they have in their minds,” Bruce said, when asked about media reports alleging SNC threatened to relocate.

“We’re proud of being a Canadian company. We have 130 offices across Canada,” he said. “This is where we want to be in terms of our base.”

Late Thursday, SNC-Lavalin spokesman Nicolas Ryan confirmed the authenticity of what he called a "confidential document" that was submitted to the Public Prosecution Service of Canada to allow the director of public prosecutions to consider the company's request for an agreement.

“It is unfortunate and deeply concerning that a confidential and commercially sensitive document submitted to the Public Prosecution Service of Canada (PPSC) for the Director of Public Prosecutions (DPP) has been leaked to the media, for reasons that remain unclear and are frankly baffling to us,” Ryan said in a statement.

“As part of the considerations evoked, and as SNC-Lavalin’s CEO Neil Bruce has articulated in media interviews, the company provided information on potential outcomes should it not have the opportunity to negotiate a deferred prosecution agreement (DPA),” the statement continued. “We have been clear and transparent for several months that the company has a fiduciary duty to shareholders and employees, to have a Plan B in place should a DPA not be available.”

The presentation, which was delivered by mail to The Canadian Press anonymously and without a return address, also suggests the end of seven-figure donations and sponsorships for various community causes, hundreds of millions more in lost tax revenues, and the loss of spending on research positions at universities.

Prime Minister Justin Trudeau has held up the threat of job losses as the main reason he and others pressed former attorney general Jody Wilson-Raybould to look into the prosecutor's decision.

Wilson-Raybould told the Commons justice committee last month she came under "consistent and sustained" pressure -- including veiled threats -- from Trudeau, his office, the Privy Council Office and Finance Minister Bill Morneau's office to halt the criminal prosecution of SNC-Lavalin.

The ensuing political fallout has cost Trudeau two cabinet ministers -- Wilson-Raybould and former Treasury Board president Jane Philpott, who said she had lost confidence in the government's handling of the affair -- as well as one of his top aides, Gerald Butts, and Michael Wernick, clerk of the Privy Council, who will leave his post as the top federal civil servant before the fall election.

Bruce and Wernick met on Sept. 18 about the company's legal troubles.

Notes taken at the meeting, tabled as evidence with the House of Commons justice committee, show that Wernick told Bruce to take the public interest argument to the director of public prosecutions, adding the company "will want to get it right."

Wernick testified earlier this month that he spoke with Wilson-Raybould the next day where the former attorney general appeared "very firm in her mind" that the prosecutor's decision to not negotiate a deal with SNC-Lavalin was final. Wernick said Wilson-Raybould told him the only option for the company was to make public interest arguments through its lawyers.

A spokeswoman for the prosecution service said any discussions or documents in the case are confidential.

With files from BNN Bloomberg