Russian propagandists targeted the popular news-sharing website Reddit to influence American political debate, a US website has claimed.
It had been widely presumed that Reddit, a hub for campaigning, activism and often extreme views, would be a logical target for any manipulation.
It has yet to publish its own investigation into Russian activity.
Now news site the Daily Beast says it has obtained files showing a Russian troll farm was active on Reddit.
The Daily Beast says it has obtained leaked documents from within Russia's Internet Research Agency (IRA), the country's most prominent troll-factory.
The US government has already charged 13 Russians, linked to the agency, with attempting to manipulate American voters using social media.
The Russian organisation is alleged to have had a budget of more than a million dollars, which the US claims was used to buy advertising on sites such as Twitter and Facebook.
So far, Reddit has not been included in the US Senate's investigation into Russian meddling in the 2016 presidential election.
