A Mexican national, Brian Alexis Patron Lopez, was sentenced to life in federal prison for his involvement in the kidnapping, torture, and murder of 18-year-old M.A.R., a U.S. citizen, in Tijuana. The sentencing followed a federal jury’s verdict after less than a day of deliberations at the conclusion of a seven-day trial.
Patron was found guilty on several charges: intentional killing while engaged in drug trafficking, hostage taking resulting in death, and conspiracy to commit hostage taking resulting in death.
“Here’s a wakeup call to drug traffickers and cartel members in Tijuana: You harm an American, you will face American justice,” said U.S. Attorney Adam Gordon. “This sentence appropriately reflects the grim reality of drug trafficking in Tijuana. But, the FBI and U.S. Attorney’s Office will continue to secure justice for crimes against American citizens even if they occur south of the border.”
Mark Dargis, Special Agent in Charge of the FBI San Diego Field Office, stated: “Patron’s callous and blatant disregard for human life is unconscionable. Today’s life sentence is the price Patron must pay for such a gruesome attack on a U.S. citizen and the pain inflicted on his family. The FBI will always work relentlessly with our law enforcement partners devoting every available resource, tool, and technique at our disposable to hold violent criminals accountable and seek justice for our citizens.”
According to evidence presented during the trial, M.A.R. was abducted from his hotel room in Tijuana on May 29, 2020. He was beaten and tortured while his attackers demanded ransom from his family before he was fatally shot by Patron on May 30 as attempts were made to pay for his release. His body was recovered six days later.
The government introduced various pieces of evidence linking Patron to the crime—including Facebook messages between Patron and co-conspirators discussing their actions; surveillance footage capturing Patron wearing identifiable clothing during the abduction; a bracelet belonging to Patron left at the scene; as well as phone records documenting ransom demands.
During sentencing proceedings, a member of M.A.R.’s family addressed Patron: “You didn’t just take [the victim’s] life, he took a part of mine.” She described ongoing pain since her loss and expressed hope that Patron would carry “the weight of what he did for the rest of his life.”
Judge Hayes told Patron: “You literally walked the victim to his death.” The judge recounted how M.A.R., realizing he would die alone on a hillside in Tijuana, was abandoned after being executed by Patron—leaving trauma that would remain with his parents forever.
The court imposed concurrent sentences: life imprisonment for hostage-taking resulting in death (as required by statute), plus 35 years followed by five years’ supervised release for intentional killing while engaged in drug trafficking.
The case was prosecuted by Assistant U.S. Attorneys Mario Peia and Alexandra F. Foster.
This investigation involved multiple agencies under Homeland Security Task Force (HSTF) San Diego—a collaborative effort including entities such as FBI, Homeland Security Investigations (HSI), DEA, ATF, U.S. Marshals Service, Department of Defense components, IRS Criminal Investigation Division among others—with prosecution led by the United States Attorney’s Office for the Southern District of California.
