Canada’s energy infrastructure was not physically damaged by a cyber attack, which is described in classified US documents, Prime Minister Justin Trudeau said on Monday, Reuters reported.

A pro-Russian hacking group may have attacked Canada’s energy infrastructure in February, the New York Times reported, citing Pentagon documents.

“Regarding the reports of cyber attacks on Canadian energy infrastructure, I can confirm that there has been no physical damage to any Canadian energy infrastructure as a result of the cyber attacks,” Trudeau told reporters in Toronto in response to questions about the leaks.

Britain’s Ministry of Defense said on Tuesday there was a “serious level of inaccuracy” in alleged leaks of classified US information, Reuters reported, while a US investigation into the leaked documents could last months, sources said. CNN.

“The massive leak of alleged US classified information has demonstrated a serious level of inaccuracy,” a Defense Department spokesman said on Twitter.

“Readers should be wary of allegations that could potentially spread misinformation,” the British Ministry of Defense said.

The US government’s investigation into the leak of classified Pentagon documents, which include information about the war in Ukraine, is beginning to take shape. The Pentagon is looking into how the leak affects US national security, and the Justice Department is launching a criminal investigation to determine who may have been behind the breach.

Open-source intelligence analysts say highly classified Pentagon information was first leaked in player chats hosted on Discord during the controversy over the war in Ukraine.

Some material appearing on Russian channels appears to have been altered, including the number of casualties from the conflict in Ukraine on both sides, to minimize Russian losses and increase Ukrainian losses.

Details in other documents are disputed by other countries, including claims that French soldiers took part in operations in Ukraine.

This can indicate many things. First, the information is not reliable and may reflect only what US agencies think they know. Denials from other countries mentioned in the materials may simply be a case of lying out of embarrassment. At least some materials can be manipulated to misinform.

On the latter point, Chris Meagher, a Pentagon spokesman, urged caution in “promoting or expanding on any of these documents,” adding that “the information appears to have been tampered with.”