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Óscar Guerrero Silva

1971 – 2004

Mexican drug lord

Drug trafficker
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About Óscar Guerrero Silva

Lived 1971 – 2004 (aged 32–33). Óscar Guerrero Silva was a Mexican drug trafficker.

Óscar Eduardo Guerrero Silva (1971 – 1 February 2004), commonly referred to by his alias Z-8 and/or The Winnie Pooh, was a Mexican drug lord and high-ranking leader of Los Zetas, a Mexican criminal organization.

Shortly after marrying, Guerrero Silva joined the Mexican Army in early 1992 and became an infantry soldier. After being promoted to corporal the following year, he deserted from the military in 1999, and began to work as an assassin for the Los Zetas and Gulf Cartel, a drug trafficking organization, along with other ex-soldiers. His life as an outlaw overwhelmed him, and he later committed suicide through a self-inflicted gunshot wound.

Criminal career Óscar Eduardo Guerrero Silva was born in Reynosa, Tamaulipas around the year 1971, and joined the Mexican Army on 28 January 1992 as an infantry soldier. The following year, he was promoted to corporal. Nonetheless, he eventually deserted from the Armed Forces in 1999 and was recruited by the drug trafficking organization known as the Gulf Cartel, becoming one of the 50 most-wanted criminals in Mexico during his time.

He was recruited along with several other soldiers of the Mexican Army in the late 1990s by Osiel Cárdenas Guillén, the former leader of the Gulf Cartel, to work as hired assassins and bodyguards, where he earned the alias Z-8. The newly formed group founded by Guerrero Silva and other ex-soldiers became known as Los Zetas, and they were highly trained and equipped, enticed with greater salaries than in the Army. Los Zetas continued to expand by hiring former police officers and gang members alike, and diversified their criminal agenda aggressively by including kidnappings, extortions, oil theft, piracy, and other rackets into their revenue, instead of focusing solely on the international narcotics trade.

In December 2002, gunmen of Los Zetas and the Gulf Cartel wearing police uniforms raided a prison in Matamoros, Tamaulipas and liberated three men accused of drug trafficking and a woman imprisoned for homicide. The Mexican authorities alleged that Guerrero Silva was involved in the raid. Later on in January 2004, Apatzingán, Michoacán was the scene of a massive prison break when over 50 uniformed gunmen of Los Zetas, including Guerrero Silva, stormed several prison cells and liberated at least 25 inmates, including several high-ranking drug lords of the Gulf Cartel, in less than 15-minutes.

Guerrero Silva was known for having one of the most bizarre and unique Mexican criminal nicknames, Winnie Pooh, but he was "hardly a lovable bear".

Death On 1 February 2004, elements of the extinct Federal Investigative Agency (AFI) raided a residence at the Riveras del Río neighborhood in Guadalupe, Nuevo León, near the city of Monterrey, and discovered the corpse of Guerrero Silva.

His temple had a gunshot wound from a 9mm pistol, suggesting that his death was an apparent suicide. Guerrero Silva was reportedly overwhelmed after the Mexican authorities had him under surveillance and because he believed his own accomplices were going to betray him.

In 1990, two years before joining the Mexican Army, Guerrero Silva married Gabriela Cervantes Zamorano. Both of them stopped seeing each other in 1997, and his wife later found out that he had deserted the military and was working for Los Zetas.

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Important facts

Born
1971, Reynosa
Birth century
Occupation
Drug trafficker
Nationality
Also known as
Oscar Guerrero Silva, The Winnie Pooh

People in Óscar Guerrero Silva's life

Named in this biography and alive at the same time

Contemporaries

People whose lives overlapped Óscar Guerrero Silva's

Frequently asked questions

Who was Óscar Guerrero Silva?

Mexican drug lord (1971–2004)

When was Óscar Guerrero Silva born?

Óscar Guerrero Silva was born in 1971 in Reynosa.

When did Óscar Guerrero Silva die?

Óscar Guerrero Silva died on 1 February 2004 in Guadalupe.

What was Óscar Guerrero Silva's occupation?

Óscar Guerrero Silva was a drug trafficker.

What nationality was Óscar Guerrero Silva?

Óscar Guerrero Silva was Mexican.

Sources & further reading

· Wikipedia: Óscar Guerrero Silva

· Wikidata: Q8078829

· DBpedia: Óscar Guerrero Silva

Cite this page

APA: Biography.guide. (2026). Óscar Guerrero Silva. https://biography.guide/oscar-guerrero-silva/

MLA: "Óscar Guerrero Silva." Biography.guide, https://biography.guide/oscar-guerrero-silva/.

Chicago: "Óscar Guerrero Silva." Biography.guide. https://biography.guide/oscar-guerrero-silva/.

Data last updated: 2026-09-20 · Spot an error? Report a correction.

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