AUSTIN – Federal investigators have charged three men with murder in connection to the kidnapping and murder of 16-year-old Darian Longoria in 2015.

The U.S. Attorney’s Office said a federal grand jury has indicted Richard Ortega, 22, Orlando “Orly” Arroyo and Brian Aguayo, 20, with murder in aid of racketeering, kidnapping in aid of racketeering and conspiracy to commit kidnapping in aid of racketeering. Ortega faces two additional charges and Arroyo with one additional charge of discharging a firearm during a drug trafficking crime or a crime of violence. Ortega and Arroyo are also charged with one count of possession/use/carrying a firearm in relation to a crime of violence resulting in murder, the Department of Justice said.

Authorities allege the suspects are part of the Dove Springs Gangstas (DSG), and five other members and associates are facing felony charges in connection to drug trafficking in Austin. Federal officials said the gang “engaged in acts of violence, including murder, attempted murder, robbery and narcotics distribution primarily in and around Austin in order to further, preserve and protect the power, territory and profits of their criminal enterprise.”

Ortega, Arroyo and Aguayo are accused of kidnapping and killing Longoria in early December 2015. Longoria’s body was found along Onion Creek in January 2016. Police have said Longoria was not part of the gang.

Darian Longoria.

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If convicted on the charge of murder in the aid of racketeering, the suspects will receive a mandatory sentence of life in federal prison. Kidnapping in aid of racketeering carries a sentence of up to life in federal prison, and conspiracy to commit kidnapping in aid of racketeering brings a sentence of up to 10 years in federal prison.

Ortega, Arroyo and Aguayo are all being held in federal custody pending trial. The Department of Justice said jury selection and trial are currently set for Dec. 4, 2017. Booking photos for the suspects are not available.