A Pentagon agency has denied any role in attributing the 2016 hack of the Democratic National Committee to Russia after an email indicated special counsel John Durham’s team asked a computer expert who had researched Trump-Russia collusion claims about it.

Democratic cybersecurity lawyer Michael Sussmann was indicted last year for allegedly concealing his clients, including Hillary Clinton’s 2016 presidential campaign, from the FBI when he pushed since-debunked claims of a secret back channel between the Trump Organization and Russia’s Alfa Bank.