Two of Canada’s most outspoken influencers have gone quiet after U.S. officials accused them of being collaborators in a covert Russian propaganda campaign.

The U.S. Justice Department unsealed an indictment against two Russian nationals on Wednesday, accusing them of disseminating pro-Kremlin propaganda through a “pro-Trump supergroup,” the Washington Post is reporting. During the few months that it operated, the outlet produced a steady stream of pro-Donald Trump content.