A communications adviser to the Trump campaign, Michael Caputo, is slated to testify in a closed-door session of the House Intelligence Committee’s investigation into Russian interference in the 2016 elections on Friday, according to Caputo’s publicist.

Caputo is well known in political circles, with work that stretches back to the Reagan and George H.W. Bush administrations, and ran the 2010 New York gubernatorial campaign for Carl Paladino, the Republican nominee.