Pro-Trump activist who planned 6 January rally to cooperate with inquiry

Attorney says Ali Alexander, organizer of Stop the Steal' movement, will work with DoJ after he was subpoenaed

Ali Alexander, the prominent pro-Trump activist, will cooperate with the justice department investigation into the Capitol attack, making him the first high-profile political figure to agree to assist the government's criminal inquiry into the events of January 6.

The move is likely to give initial momentum to the newly expanded justice department investigation running in parallel to the House select committee investigation examining Donald Trump and the Capitol attack.