SIOUX FALLS, S.D. – Three Sioux Falls men have been arrested, accused of being members of a gang often tied to drug trafficking. According to the indictment, Nathan Carlos Hernandez, 20, Sebastian Michael Waters, 19, and Tino Sage Roubideaux, 29, are members of the Gangster Disciples, a gang with members and associates in Sioux Falls and other locations.
Federal prosecutors allege the three men conspired to kill a person they viewed as a threat to the gang.
On Jan. 4, 2026, prosecutors say the men located the victim at a Sioux Falls business and opened fire, shooting at the victim more than once. Two guns were allegedly used in the attack.
The indictment alleges members of the gang could gain respect and increase their status by taking part in criminal activity, including violence. Prosecutors also allege one purpose of the gang was to keep victims, rival gang members and others in the community in fear.
The three men face several federal charges, including conspiracy to commit murder in aid of racketeering, attempted murder, assault with a dangerous weapon and firearms offenses.
All three have pleaded not guilty.
Federal officials have previously linked the Gangster Disciples to drug trafficking. A 2007 Justice Department report already identified the gang as operating in Sioux Falls and said members traveled to the city to distribute crack cocaine and other illegal drugs.
The Gangster Disciples was founded in Chicago in the 1960s through the merger of two groups, the Black Disciples and Supreme Gangsters. The Justice Department says the gang expanded throughout the Midwest and Eastern United States by the mid-1980s.
If convicted, the three men face up to 10 years in prison for conspiracy to commit murder and attempted murder, and up to 20 years for assault with a dangerous weapon.
Discharging a firearm during and in relation to a crime of violence and aiding and abetting is a mandatory minimum sentence of 10 years and a maximum of life in prison. That sentence would be served consecutively to any sentence for the underlying violent crime.
The men also face up to 15 years in prison for possessing a firearm as a prohibited person.
Homeland Security Investigations and the Sioux Falls Police Department investigated the case.
