JEFFERSON COUNTY • Four men committed a brutal assault here in 2013 to either join or advance within the white supremacist Aryan Circle gang, a federal indictment unsealed Thursday claims.

Thomas B. Wilson, 43, of Villa Ridge; Daniel B. Jerome, 31, of Wentzville; Thomas Tisher, 34, of St. Louis; and Dustin M. Haney, 28, of Hermann, were indicted Wednesday on one felony count of aggravated assault in aid of racketeering and a gun charge. All but Jerome have been arrested, federal prosecutors said.

The indictment says the four, as well as “others known and unknown,” assaulted someone identified only as “C.B.” in Jefferson County on Nov. 9, 2013. The attack resulted “in serious bodily injury,” the indictment says.

No other details of the attack were provided in the indictment or by authorities.

Three of the men have prior felony convictions.

In 2015, Wilson was sentenced in U.S. District Court to 6½ years in prison on a carjacking charge. The sentence was to run at the same time as a seven-year sentence in Madison County Circuit Court for home invasion with a firearm and for violating his federal supervised release on a 2009 case involving a methamphetamine manufacturing conspiracy.