WATERBURY, Vt. (WFFF) — Three Vermont State Troopers have resigned and have been suspected of making fake vaccine cards. The three officers are Shawn Sommers, Raymond Witkowski, and David Pfindel.

Sommers and Witkowski submitted their resignations last month, a day after another trooper raised concerns. Pfindel resigned Friday, following an additional investigation by the Department of Public Safety.

The three are accused of having different roles in creating fake vaccine cards, which might violate federal law.

“The accusations in this case involve an extraordinary level of misconduct—a criminal violation of the law—and I could not be more upset and disappointed,” said Col. Matthew T. Birmingham, director of the Vermont State Police. “If these allegations are proved to be true, it is reprehensible that state troopers would manipulate vaccination cards in the midst of a pandemic, when being vaccinated is one of the most important steps anyone can take to keep their community safe from COVID-19.”

“I’m embarrassed that this situation has occurred and know that it has tarnished the reputation of the Vermont State Police,” Col. Birmingham continued. “That said, the alleged criminal conduct from these troopers does not represent the values and actions of the dedicated men and women of the Vermont State Police.”

The case has been handed over to the FBI and the U.S. Attorney’s Office in Burlington.

An email seeking comment from the Vermont Troopers Association was not immediately returned on Tuesday.

In August, U.S. Customs and Border Protection revealed that officers at the port of Memphis seize hundreds of counterfeit COVID-19 vaccination cards every night. The FBI has warned that buying, selling, or using a counterfeit COVID-19 vaccination card is a crime and could result in a fine and up to five years in prison.

The Associated Press contributed to this report.