President Donald Trump announced Friday that he signed pardons for six individuals convicted of violating federal clean-air and emissions laws, arguing they had been unfairly targeted by the previous administration. “It is my Great Honor to have just signed Pardons for six people who were persecuted by the Biden Administration, and were in, or being sent to, prison, for ‘fixing their car,'” Trump wrote on Truth Social, adding that he believes the individuals were victims of a weaponized Justice Department. He did not identify those pardoned or provide further details on the specific charges they faced.

The pardons stem from prosecutions under the Clean Air Act related to so-called “defeat devices” — software used to disable vehicle emissions controls. Earlier this year, the Justice Department had already ordered federal prosecutors to drop pending criminal cases tied to such devices, and a June 29 executive order further directed the EPA to scale back civil enforcement in this area.

The president met with senior officials Friday to review the slate of pardons, which was managed by a small group of aides including White House special counsel David Warrington, chief of staff Susie Wiles, and U.S. Pardon Attorney Ed Martin. Sources familiar with the matter said Trump is separately weighing clemency for other high-profile figures, including rap mogul Sean “Diddy” Combs, though Friday’s announced pardons were limited to Clean Air Act cases. Combs is currently serving a four-year federal sentence after being convicted last year.

Trump has made expansive use of the pardon power throughout his second term, beginning with mass clemency for over 1,500 people connected to the January 6, 2021 Capitol riot on his first day back in office. The pattern has drawn scrutiny from congressional Democrats, who have opened an investigation into concerns about “pay-to-play” dynamics in the administration’s clemency process.