NDP Leader Jagmeet Singh said Wednesday that he believes the Kinder Morgan approval process was “rigged” and called on the government to turn over relevant documents to prove otherwise.

“Based on some information that we’ve received from media reports, it seems as though the Kinder Morgan approval process was rigged,” Singh said.

He went on to explain that, according to an article published in the National Observer Tuesday, it appeared as though the government instructed senior political official Erin O’Gorman — who was, at the time, the associate deputy minister of the major projects management office — to “find a way to approve” the project.

Singh said that during the same time, Kinder Morgan had lobbied the government over 36 times.

In reaction to the news, the NDP is asking the government to turn over all relevant documentation on the pipeline’s approval process. The third-largest party in the House is also going to move a motion during Thursday’s Natural Resources committee in an attempt to haul Erin O’Gorman before the committee.

NDP MP Nathan Cullen raised the allegation that the Kinder Morgan approval process wasn’t on the up and up during Wednesday’s question period.

Cullen said the approval process was “looking more rigged than a Russian election” before asking the government to, again, turn over the relevant documents.

Prime Minister Justin Trudeau responded to the allegation, assuring Cullen that the government took additional steps to make the Trans Mountain Expansion Project’s approval process more “rigorous.” He also pointed out that the government had extended consultations with Indigenous peoples, wondering why the NDP was “ignoring” the Indigenous peoples who are backing the pipeline project.

Indigenous peoples’ approval of the project hasn’t been the only concern dogging the proposed pipeline expansion.

The Trans Mountain pipeline has been marred by provincial squabbling, which escalated after the the company’s April 8 announcement that it would suspend all non-essential spending on the pipeline project. Kinder Morgan made the contentious call in response to the B.C. government’s opposition to the expansion of an existing pipeline to the B.C. coast — allowing Alberta oil to reach new markets.

In response to the B.C. government’s opposition to Kinder Morgan, Alberta Premier Rachel Notley introduced legislation on April 16 that would allow her government to restrict B.C.’s flow of Alberta oil. Saskatchewan and Quebec have also weighed in to take sides in the escalating squabble.

Provincial resistance to the project — and the inter-provincial bickering that followed — has been identified as a key source of concern for the company as it attempts to twin an existing pipeline and extend it to the West Coast.

Kinder Morgan has given the government until May 31 to solve the pipeline dispute.