The study, which was conducted by Harvard’s Shorenstein Center on Media, Politics and Public Policy, analyzed 469 court documents detailing the participation of 417 Jan. 6 participants who have faced criminal charges.

“Far and away, we find that the two most commonly-cited reasons for breaching the U.S. Capitol were a desire to support Trump on January 6th in D.C. and concerns about election integrity,” the report reads.

NBC reported those two reasons comprised the primary motivator for roughly four in ten rioters studied. The study found that 20.6 percent of rioters cited their support for Trump and an equal proportion cited his unfounded belief that the election had been stolen.

The Hill has reached out to the Shorenstein Center for a full copy of the study.

The study’s release comes as the House select committee investigating the Capitol riot prepares to hold its eighth hearing on Thursday evening in prime time. The panel’s members have said it will go through the riot minute-by-minute, up until Trump eventually released a video telling the rioters to “go home.”