Ivan Harrison Hunter was the guys name. You can do a search of you want. I do have to correct myself - he was not charged in the arson, but he was charged for firing 13 rounds into the precinct.
https://www.justice.gov/usao-mn/pr/self-described-member-boogaloo-bois-charged-riot
"Federal agents reviewed a video taken on the night of May 28, 2020, that shows an individual, later identified as HUNTER, discharged 13 rounds from an AK-47 style semiautomatic rifle into the Minneapolis Police Department’s Third Precinct building. At the time of the shooting there were other individuals believed to be looters still inside the building. Law enforcement recovered from the scene discharged rifle casings consistent with an AK-47 style firearm.
According to the allegations in the criminal complaint and law enforcement affidavit, upon returning to Texas, HUNTER made various statements on social media describing the violence in which he engaged in Minneapolis. On June 3, 2020, officers with the Austin Police Department conducted a traffic stop on a pick-up truck for numerous traffic violations. HUNTER was one of three occupants in the vehicle. HUNTER, the front seat passenger, had six loaded magazines for an AK-47 style assault rifle affixed to a tactical vest he was wearing. Officers found three semi-automatic rifles on the rear seat of the vehicle, one loaded pistol in plain view next to the driver’s seat, and another loaded pistol in the center console. Several days after the traffic stop, federal agents became aware of HUNTER’s online affiliation with Boogaloo Bois member Steven Carrillo, who has been charged in the Northern District of California with the May 29, 2020, murder of a Federal Protective Service Officer in Oakland, California."