Brandon Straka, a Donald Trump ally who spoke at a Jan. 5 “Stop the Steal” rally in Washington — and has since pleaded guilty for joining the mob that stormed onto the grounds of the U.S. Capitol the next day — has provided investigators with information they say “may impact the government’s sentencing recommendation.”

It’s an indication that Straka, one of the few Jan. 6 defendants who is also of interest to congressional investigators, has cooperated with prosecutors in a substantive way.

Straka, who describes himself as a “former liberal,” became a relatively prominent figure in Trump-world in 2018, when he founded the “WalkAway campaign” to encourage liberals to abandon Democrats. He was one of just two speakers at pro-Trump events on Jan. 5 and 6 criminally charged for their roles in the Capitol attack. Owen Shroyer, an InfoWars broadcaster and ally of Alex Jones, also faces misdemeanor charges in the case.