The notorious Mexican Mafia prison gang was founded by Luis "Huero Buff" Flores, Mundo Mendoza, Joe "Peg leg" Morgan and Eddie Gonzales in July 1957 at the Deuel Vocational Institution in Tracy, California. The gang was formed as a way to unite all Mexican Americans in prison and protect them from predatory black inmates. The Mexican Mafia was the first Hispanic gang to make a career out of being criminals. They control tens of thousands of gangsters through out the streets of California and operate one of the West Coasts most lucrative drug trafficking enterprises.
The strength of this highly organized paramilitary gang comes from the control it has over most of Southern California’s violent street gangs known as “Surenos”. The Surenos dish up the demands of the Mexican Mafia and carry out most of the organizations contract killings. In 1993, Orange County law enforcement discovered that the Mexican Mafia was conducting mass meetings with numerous street gangs. The Mexican Mafia was ordering all street gangs to call a truce and link with the prison gang.
The Mexican Mafia is commonly confused with the Texas based Mexikanemi. Both gangs are not linked in any way, shape or form.

Symbols: black hand of death, EME, 13, Emero, So Cal, Mafia Mexicana, Aztec calendar.
Ranking structure: Paramilitary
Territory: Los Angeles, San Fernando Valley, San Bernardino, San Diego and cities across central California.
Alliances: Aryan Brotherhood, Surenos, Hispanic street gangs in southern California.
Members: 9,000
Racial make up: Hispanic
Threat: High


After federal and state authorities began going for the head of the Mexican Mafia, dozens of its members began “spilling the beans” to police. High ranking members of the gang decided to put a halt in recruiting new members. As a result the organization has declined in numbers. With doors of the Mexican Mafia currently closed, the Surenos, also known as Sur 13, is becoming the predominate prison gang of all southern California.



In July 1957, the notorious Mexican Mafia prison gang is founded by Luis "Huero Buff" Flores, Mundo Mendoza, Joe "Peg leg" Morgan and Eddie Gonzales at the Deuel Vocational Institution in Tracy, California. (Gang Intelligence 101)


In 1958, Mexican Mafia members Doroteo Betancourt and Frank Bazure murder a Correctional Officer at the San Quentin state penitentiary. The murder was ordered after the officer assaulted an EME member. (Gang Intelligence 101)


In 1964, Mexican Mafia leaders introduce the “blood in blood out” oath. The oath was formed as a way to ensure loyalty among members.


On October 19, 1972, Mexican Mafia members brutally murder Nuestra Familia member Leonard Arias at the C.C.I. state prison in Tehachapi, California. (Mata v. Sumner, 611 F.2d 754 (C.A.9 (Cal.), 1979)


July 1975, Mundo Mendoza, Joe Morgan and Eddie Gonzales reorganized the drug trade in the streets of all southern California. Their new policy was to tax all independent drug dealers for selling dope on their territory. (Gang Intelligence 101)


On October 1975, Mexican Mafia members viciously murder 3 Nuestra Familia members. (Gang Intelligence 101)


On October 30, 1978, Robert Martinez, an inmate at the federal penitentiary in Terre Haute, Indiana, died as a result of head injuries inflicted by blunt force approximately an hour before his death. U.S. v. Bruscino, 662 F.2d 450 (C.A.7 (Ind.), 1981)


In 1981, Mexican Mafia and Aryan brotherhood members murder black inmate T. Chappelle at the Marion Federal Penitentiary for disrespecting a Mexican mafia member. (U.S. v. Silverstein, 732 F.2d 1338 (C.A.7 (Ill.), 1984)


On March 14, 1984, Mexican Mafia members stab Nathan Cowger to death at the United States Penitentiary at Marion, Illinois. The murder was ordered because Cowger had disrespected a Mexican mafia member. (Mendoza v. Miller, 779 F.2d 1287 (C.A.7 (Ill.), 1985)


On January 25, 1989, Mexican Mafia members stab and kill ex Mexican Mafia member Johnny Estrada at the USP-Lompoc federal penitentiary. (U.S. v. Santiago, 46 F.3d 885 (C.A.9 (Cal.), 1995)


In 1991, Mexican Mafia founder Luis “Huero Buff” Flores dies of a heroin over dose. (Gang Intelligence 101)


On April 27, 1991, Mexican Mafia members murder “Dirty White Boy” member Charles Sammons at the Portage House Unit at Oxford state prison. Sammons murder was ordered by leaders of MM after Sammons disrespected a member. (Gang Intelligence 101)


On March 25, 1992, Mexican Mafia members murder ex member Charles "Charlie Brown" Manriquez for failure to commit a murder he was ordered to do. (U.S. v. Shryock, 342 F.3d 948 (9th Cir. 2003)


 On May 13, 1992, Jose "Joker" Gonzales, a Hazard gang member, 2 and an unidentified gunman shot Lizarraga thirteen times, killing her. Suspected police informant (U.S. v. Shryock, 342 F.3d 948 (9th Cir. 2003)


In 1993, Orange County law enforcement discover that the Mexican Mafia is conducting
mass meetings with numerous street gangs. The Mexican mafia was ordering all street gangs to call a truce and link with the Mexican Mafia. (Gang Intelligence 101)


On February 6, 1993, Mexican Mafia members murder Jose Uribe in the Los Angeles County jail. Uribe’s murder was ordered to keep the victim from testifying in a court trail. Uribe is beaten and stabbed 37 times with a shank. (Alvarado v. Superior Court, 99 Cal.Rptr.2d 149 (Cal., 2000)


On August 7, 1993, Aguirre shot and killed Mexican Mafia member Manuel "Rocky" Luna. The police found Luna's body riddled with gunshot wounds in the driver's seat of a car parked in Ramona Gardens. Failure to carry out murder. (U.S. v. Shryock, 342 F.3d 948 (9th Cir.)


On December 5, 1993, Mexican Mafia members murder Ricardo "Rascal" Gonzales for interfering with the gangs drug sales. (U.S. v. Shryock, 342 F.3d 948 (9th Cir. 2003)


In 1995, 22 Mexican Mafia members and associates are prosecuted under RICO. Several high ranking members begin defecting and “spilling the beans”. (Associated Press)


On April 22 1995, Mexican Mafia members brutally murdered a family of 5 after the family’s father, a former Mexican Mafia member Tony Jesus Moreno, was taking drug cuts from local drug dealers. (Associated Press)


On August 14, 1995, Mexican Mafia members brutally murder police informants Randy Morales and Allan Downey (People v. Marquez (Cal. App. 12/2/2008) (Cal. App., 2008)


On October 1998, Mexican Mafia members brutally murder June Flood and Rex Tanner at the couple’s ranch in a home invasion robbery. (State v. Pinder, 2005 UT 15, 114 P.3d 551 (UT, 2005)


 In 1999, the FBI arrest Mexican Mafia members and associates , Frank Fernandez, Roy Gavaldon, David Gonzales-Contreras , Dominick Gonzales , Jimmy Sanchez , and Suzanne Schoenberg-Sanchez on a variety of RICO and drug-trafficking charges.(U.S. v. Fernandez, 388 F.3d 1199 (9th Cir., 2004)


In 2002, Mexican Mafia members stab prison inmate Jabilia Barragan to death at the High Desert State Prison in Susanville, California. Barragan is murdered for disrespecting one of the gangs Lieutenants. (Gang Intelligence 101)


On January, 2004, Mexican Mafia member’s gun down a member of the Mongols Motorcycle gang after the biker refuses to pay 10% of his methamphetamines sales. (Associated Press)


In 2006, 36 Mexican Mafia members are arrested throughout southern California on a federal indictment. (Associated Press)


In 2007 high ranking Mexican Mafia member Emero Frank "Frankie B" Buelna, 61, is gunned down in a Pomona sports bar. His murder remains unsolved. (Associated Press)







BARRIO AZTECA - The Azteca use codes so deciphering gang messages is difficult for gang intelligence.

BORDER BROTHERS - The gang made bitter enemies with the Mara Salvatrucha &other prison gangs..

HPL - HERMANDAD DE PISTOLEROS LATINOS - Translates to "Brotherhood of the Latin Gunman"

INDIAN POSSE - The Indian Posse are involved in cocaine and marijuana dealing, boot legging & murder.

LATIN KINGS - The Latin Kings originated in the streets in Chicago in the 1943...........................................

LOS SOLIDOS - Los Solidos gang was founded in 1990 by ruthless Puerto Rican street thugs .....................

MEXIKANEMI - Texas Mexican Mafia - There is an estimated 17,000 Mexikanemi members....................

MEXICLES - Typical of all prison gangs, the PRM transformed from prey to predator in no time.................

MS-13 - MARA SALVATRUCHA - In 1980, The MS 13 was founded by El Salvadorian criminals...............

MANITOBA WARRIORS - The Manitoba Warriors met its first rival, the Indian Posse prison gang...........

NATIVE SYNDICATE - The NS made immediate enemies with other violent Native American cliques.........

TEXAS SYNDICATE - The Texas Syndicate is one of Texas’s most established prison gangs.......................

NEW MEXICO SYNDICATE - The prison gang spread into the New Mexico prison system in 1980............