Shawn Sommers and Raymond Witkowski resigned Aug. 10, a day after a colleague raised concerns about the alleged fraud to supervisors, while David Pfindel’s resignation took effect Friday after an investigation by Vermont’s Department of Public Safety, according to a police statement. Authorities said the three men, who were reported to supervisors by their fellow troopers, “are suspected of having varying roles in the creation of fraudulent covid-19 vaccination cards, which may be a violation of federal law.”