A former commanding officer at Guantanamo Bay was charged with obstruction of justice Wednesday after he was accused of lying about a “violent confrontation” he had with a base worker who was later found dead, The Washington Post reports. According to the Justice Department, a Florida grand jury indicted U.S. Navy Capt. John Nettleton on charges of “obstruction, concealment, falsifying records and false statements” for allegedly lying about a fight he had with Christopher Tur before his death. The indictment alleges that Tur, who was found drowned in Guantanamo Bay waters in 2015, confronted Nettleton two days before his death and accused Nettleton of having an affair with his wife. Later that evening, Tur allegedly went to Nettleton’s residence and the two got into a physical altercation that went unreported by Nettleton. As officers on the base searched for Tur after he died, Nettleton allegedly claimed he last saw him before the altercation occurred. Authorities reportedly found blood stains in Nettleton’s home that were a DNA match to Tur.