43 Mexican Mafia Gangsters Arrested on Indictments Alleging Racketeering, Drug Trafficking, Kidnapping, Assault, and Murder

SANTA ANA, California – Twenty-five members and associates of the Mexican Mafia prison gang were arrested today on three federal indictments charging them with committing scores of crimes in Orange County, including kidnapping, extortion, trafficking fentanyl and methamphetamine, running illegal gambling businesses, and murdering a victim last year at a gang-controlled Anaheim motel. The defendants arrested this morning include: Jaime Alvarado, 42, a.k.a. “Junior” and “Brian Barbas,” of Lake Elsinore; Karina Cesena, 32, also of Lake Elsinore; and Mario Flores, 40, a.k.a. “Happy,” of Anaheim. Senior gang members already in state custody who are expected to make their initial appearances and be arraigned in the coming weeks include: Luis Cardenas, 48, a.k.a. “Gangster,” “Pops” and “Tio,” an inmate at Ironwood State Prison; Jose Antonio Ochoa Madrigal, 41, a.k.a. “Sparky,” of Santa Ana, who incarcerated in an Orange County jail. In connection with this investigation, law enforcement has seized four kilograms (8.8 pounds) of fentanyl, 54.4 kilograms (120 pounds) of methamphetamine, 0.9 kilogram (two pounds) of heroin, three kilograms (6.6 pounds) of cocaine, 25 firearms, and more than $30,000 in cash. The Mexican Mafia, a.k.a. “La Eme,” is a U.S.-based prison gang that has immense control over Hispanic street gangs in Southern California, directing illegal activities from prisons and collecting a portion of the proceeds from drug trafficking, illegal gambling, and other crimes committed on the streets. The case’s main indictment charges 40 defendants with a series of felonies, including racketeering conspiracy, conspiracy to operate an illegal gambling business, violent crimes in aid of racketeering, trafficking narcotics such as fentanyl, methamphetamine, heroin, and cocaine, and using firearms during a crime of violence. According to this 66-count indictment, from June 2024 to April 2026, Cardenas oversaw the Mexican Mafia’s criminal activities in Orange County and within Orange County jail and prison facilities. Alvarado, Cesena, Madrigal, and Flores held the position of high-ranking associates for Cardenas. From his prison cell, Cardenas used an encrypted messaging application on contraband cell phones to direct Alvarado in the operation of the Mexican Mafia’s activities in Orange County. Cardenas directed others to kidnap and assault people in bad standing with him, and Alvarado, Cesena, and others carried out his directions. Defendants operating for the Mexican Mafia shot at and assaulted victims. The gang also sold narcotics – including fentanyl, methamphetamine, heroin, and cocaine – via slap houses (illegal gambling houses), gangs, and drug dealers in Orange County. It ran illegal gambling businesses within commercial strip malls and private residences. The gang collected extortionate taxes and provided security, including the use of violence, to protect the illegal gambling businesses. Alvarado oversaw gang-controlled motels and, along with Cesena, directed violent retaliation against slap houses that did not pay the gang’s extortionate “taxes.” On February 3, 2025, Matthew Kundrat, 29, a.k.a. “Bubba,” of Anaheim, and Manuel Ramos, 45, a.k.a. “Rhino,” of Santa Ana, murdered a victim at the Akua Inn, a gang-controlled motel in Anaheim. Kundrat and Ramos committed the murder for the purpose of gaining entrance to the Mexican Mafia and increasing their standing in the criminal enterprise. Both Kundrat and Ramos are charged with committing a violent crime in aid of racketeering activity and, if convicted, would face a mandatory sentence of life in federal prison and would be eligible for the death penalty. On March 14, 2025, Cardenas, Alvarado, Flores, and Cesena directed the kidnapping and assault of a victim who was an employee at a Cardenas-controlled slap house in Stanton. The penalty for kidnapping is life in federal prison. Alvarado and Cesena stored methamphetamine and firearms at a storage unit in Orange County as well as at local private residences.