A senior correction officer and a lieutenant at the U.S. Bureau of Prisons’ Federal Medical Center in Devens were arrested Thursday, one for injuring a “vulnerable inmate” in a mental health housing unit and the other for trying to cover up the assault, U.S. Attorney Andrew Lelling said.

Seth M. Bourget, 39, of Woodstock, Conn., a senior correction officer, was indicted on two counts of deprivation of civil rights under color of law, Lelling said, and Lt. Joseph M. Lavorato, 51, of Wilmington, was indicted on obstruction of an official proceeding and destruction and falsification of records in a federal investigation.

They appeared in U.S. District Court in Boston on Thursday and were released on restricted travel conditions and prohibited from speaking to victims and potential witnesses. They did not have lawyers on Thursday and are scheduled to be arraigned on Feb. 13.

“These corrections officers abused their authority and the public’s trust by allegedly injuring a vulnerable inmate and then attempting to cover it up,” Lelling said. “This conduct is an affront to the law enforcement officers who serve honorably every day and fulfill their duties with fairness and integrity. Today’s charges reflect the Justice Department’s commitment to prosecuting official misconduct.”

Bourget is accused of injuring a handcuffed inmate who was restrained on the floor on June 18, 2019, by dropping his knee on the prisoner’s head and striking the inmate with a protective shield with excessive force in a locked cell, according to the indictment.

Lavorato is accused of obstructing the U.S. Bureau of Prison’s review of the incident by failing to timely and accurately report the nature and extent of the inmate’s injuries, intentionally concealing the existence of a video recording of the incident in an official report, destroying the video and then falsely claiming that the security camera was not working at the time due to a dead battery, the indictment said.