A Russian computer expert accused of meddling in the US 2016 presidential election says he simply did ordinary IT work, not political trolling.
Sergei Polozov is among 13 Russians named in the Mueller indictment, which alleges a systematic Russian state effort to influence US voters.
Mr Polozov told BBC Russian he knew nothing about a Russian "troll farm" called the Internet Research Agency.
The agency's alleged location, he said, was a business centre he had visited.
"My job was typical of co-operation between an IT company and any subcontractor: you are set a task, for example, to create a website, a visiting card, a web page."
None of those tasks, he stressed, involved use of the English language or targets in the US.
He said he had collaborated with workers at Savushkina 55, the St Petersburg address alleged to have been the nerve centre of Russian cyber-meddling in the US election, ahead of Donald Trump's victory.
Mr Polozov admitted having done tasks for Mikhail Burchik, another name on US Special Counsel Robert Mueller's indictment.
But he did not give details of his help for the St Petersburg "business centre". None of the other named Russian suspects has spoken to the BBC at length.
He described himself as "a quite active patriot". "I love Russia and like the direction in which we're going."
The Russian agency - IRA for short - allegedly spread millions of tweets and at least 180,000 Facebook posts aimed at influencing US voters.
US special counsel Robert Mueller issued an indictment in February 2018 accusing 13 Russian nationals and three Russian firms of such meddling.
It alleges that Mr Polozov worked for the Russian IRA from about April 2014 to about October 2016, managing its IT department.
It says he "oversaw the procurement of US server and other computer infrastructure that masked the organisation's Russian location when conducting operations within the United States".