Brown Brotherhood Gang Members Indicted for Drug and Firearms Trafficking

SACRAMENTO, Calif. — On March 13, 2025, a federal grand jury returned four separate indictments against Brown Brotherhood Gang Members Leo Alphonzo Alonso-Medina, 32, of Vallejo; Jeremiah I’amafana Salanoa, 22, of Vallejo; Doroteo Suastegui, 47, of Vallejo; and Carlos Osvaldo Higuera-Aldana, 22, of Dixon, Acting U.S. Attorney Michele Beckwith announced.

According to court documents, the Brown Brotherhood gang is a subset of the Sureño gang and has been a frequent target of investigations of the Vallejo Police Department and the Solano County Violent Crime Task Force. The primary criminal activities of this gang have included murder, robbery, extortion, drug trafficking, firearms trafficking, burglary, and stolen vehicles. The current investigation began in February 2024 and led to searches and arrests on Feb. 27, 2025. FBI agents and task force officers arrested these four members of the Brown Brotherhood gang on that day for federal drug trafficking and firearms charges.

Contraband seized from search warrants executed on Feb. 27, 2025.

The indictment against Leo Alphonzo Alonso-Medina charges counts of distribution of cocaine and methamphetamine, unlawful dealing in firearms, and two counts of being a felon in possession of a firearm. If convicted, Alonso-Medina faces a maximum statutory penalty of life in prison and a $10 million fine.

The indictment against Jeremiah I’amafana Salanoa charges three counts of distribution of fentanyl, one count of distribution of methamphetamine, and possession with intent to distribute fentanyl. If convicted, Salanoa faces a maximum statutory penalty of life in prison and a $10 million fine.

The indictment against Doroteo Suastegui charges counts of distribution of methamphetamine, possession with intent to distribute cocaine, possession with intent to distribute methamphetamine, and unlawful dealing in firearms. If convicted, Suastegui faces a maximum statutory penalty of life in prison and a $10 million fine. 

Finally, the indictment against Carlos Osvaldo Higuera-Aldana charges three counts of distribution of methamphetamine, one count of possession with intent to distribute methamphetamine, and one count of possession with intent to distribute fentanyl. If convicted, Higuera-Aldana faces a maximum statutory penalty of life in prison and a $10 million fine.

These cases are the product of investigations by the FBI Violent Crime Task Force, the Bureau of Alcohol, Tobacco, Firearms and Explosives, the Fairfield Police Department, the Vacaville Police Department, the Vallejo Police Department, the Solano County District Attorney’s Office, and the Solano County Sheriff’s Office. Assistant U.S. Attorneys Jason Hitt, R. Alex Cárdenas, and Adrian Kinsella are prosecuting these four federal cases.

Any sentence imposed would be determined at the discretion of the court after consideration of any applicable statutory factors and the Federal Sentencing Guidelines, which take into account a number of variables. The charges are only allegations; the defendants are presumed innocent until and unless proven guilty beyond a reasonable doubt.

The case was investigated under the Organized Crime Drug Enforcement Task Forces (OCDETF). OCDETF identifies, disrupts, and dismantles the highest-level criminal organizations that threaten the United States using a prosecutor-led, intelligence-driven, multi-agency approach. For more information, please visit Justice.gov/OCDETF.