A judge on Monday scheduled a May 2021 jury trial date in the civil case of a Boise police officer who is suing the city because he claims he was retaliated against after he voiced concerns about his supervisor’s unethical behavior.

Cpl. Norman Carter in 2018 filed a whistleblower lawsuit, claiming that Boise Police Lt. Greg Oster “openly” sold weapons, both to officers and the public, through his private company out of his police department office.

Carter also claimed Oster, who became his supervisor in 2015, retaliated against him after he raised concerns, and that other officials failed to prevent the retaliation.

The Idaho Press reports, the trial date set is May 5th, 2021.