A 29-year-old man who was injured in a Labor Day shooting in Maple is now facing federal charges.

Patrick Ray Staton was indicted Wednesday on charges of robbing a Brule gas station and being a felon in possession of firearms and ammunition, according to a news release from the U.S. Attorney's Office for the Western District of Wisconsin.

The indictment alleges that Staton robbed the Cenex station in Brule on Aug. 30. Three days later, he was shot by a 24-year-old Proctor man in an act that was later ruled to be self-defense.

At the time, federal prosecutors said, Staton was in possession of a .45 caliber revolver and ammunition, a rifle, and a 9 mm handgun and ammunition.

Wisconsin court records indicate that Staton has an extensive criminal history, with at least nine felony convictions since 2010. The crimes include possession of improvised explosives, bail jumping, burglary, witness intimidation and manufacturing or delivering controlled substances.

Staton was shot in the right shoulder, forearm, chest and back of the head in the Sept. 2 incident near his residence on Pellman Loop in Maple. Reports from the Douglas County Sheriff's Office indicated that Staton confronted a man who accompanied two women — Staton's ex-girlfriend and a friend of his current girlfriend — to pick up an ATV in the Maple area.

The shooter told authorities that Staton threatened to beat him and came at him while armed with a gun. The Proctor man, who had never met Staton prior to the incident, fired multiple rounds until Staton dropped to the ground.

Douglas County District Attorney Mark Fruehauf in October ruled the incident self-defense, concluding that a "criminal charge could be proved beyond a reasonable doubt against the alleged shooter in this incident."

Inside Staton's home, deputies said they recovered three firearms that had been stolen out of Duluth. They also found items linking him to the Brule robbery, including clothing that matched what the suspect was wearing and money wrapped in bank bands in the bedroom of the home.

Staton already was charged in Douglas County Circuit Court with one count of robbery with threat of force and three counts of possession of a firearm by a felon. With the new federal charges, he faces up to 20 years in prison for robbery and 10 years for the firearms violations.

Staton's girlfriend, 38-year-old Leah Marie Sommerlot, faces one felony count of aiding a felon, three misdemeanor counts of bail jumping and one count of obstructing an officer.