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Born in Colombia · Nationality Colombian — organised crime / paramilitarism / drug trafficking / ERPAC

Pedro Oliveiro Guerrero

Documented profile covering 12 controversies, including “16 January 2003: Indicted over enforced disappearance of Victoria Rivera and Diana Cristina Martínez” and “19 April 2004–August 2010: Sentenced to 40 years for enforced disappearance of nurse María Cristina Cobo Mahecha”.

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Profile No. 2217 · Updated on 12 October 2026

12Documented controversies+ 2 background events

12Sources

2 followed by a conviction ·

§ Legal statuses reflect the documented sources as of the date shown; they replace neither court decisions nor the presumption of innocence. Counts are not a rating. Methodology

I. Documented controversies

Case · 2 documented stages

19 April 2004–August 2010: Sentenced to 40 years for enforced disappearance of nurse María Cristina Cobo Mahecha

Conviction

16 January 2003–6 May 2010

16 January 2003: Indicted over enforced disappearance of Victoria Rivera and Diana Cristina Martínez

Formally charged

Colombian prosecutors committed Guerrero and José Sury Soto Quimbay, alias "Fuego Verde", for trial on charges of aggravated enforced disappearance of Victoria Rivera and Diana Cristina Martínez. The two women had been taken by armed men from the hamlet of La Esmeralda in Guaviare on 16 January 2003.

State of the evidence: Alleged
Attribution: Accused

Sources · 2

[1]
El EspectadorAcusan a ‘Cuchillo’ por desaparición de dos mujeres en GuaviarePressHigh reliability
[2]
Caracol RadioA juicio alias 'Cuchillo' por la desaparición de dos mujeresPressHigh reliability

Last verified: 14 September 2026

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19 April 2004–11 August 2010

19 April 2004–August 2010: Sentenced to 40 years for enforced disappearance of nurse María Cristina Cobo Mahecha

Conviction

The specialised court in Villavicencio sentenced Guerrero to 40 years in prison after prosecutors established his responsibility for the enforced disappearance of María Cristina Cobo Mahecha. The victim, a municipal employee in Calamar, had been abducted from public transport by Guerrero's men after being accused of collaborating with guerrillas.

State of the evidence: Established by a court
Attribution: Accused

Sources · 1

[1]
El TiempoCondenan a 40 años de cárcel a alias 'Cuchillo' por desaparición forzadaPressHigh reliability

Last verified: 14 September 2026

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Case · 2 documented stages

December 2010: Dies while fleeing during Operation Diamante after years on the run

Case dismissed / dropped

2007–2010

2007–2010: Establishment and leadership of ERPAC, successor group financed by drug trafficking

Formally charged

After the fragmentation of AUC structures in eastern Colombia, Guerrero consolidated ERPAC, a successor armed organisation operating in Meta, Guaviare, Guainía, Vichada and Casanare. Authorities describe it as financed by drug trafficking, with networks of hired killers, logistics, recruitment and finance.

State of the evidence: Documented
Attribution: Directly implicated

Sources · 3

[1]
InSight CrimePedro Oliverio Guerrero, alias ‘Cuchillo’High reliability
[2]
Policía Nacional de ColombiaOperación Orión Libertad contra la estructura de alias CuchilloOfficial documentVery high reliability
[3]
Human Rights WatchParamilitaries’ Heirs: The New Face of Violence in ColombiaNGO reportVery high reliability

Last verified: 14 September 2026

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25–28 December 2010

December 2010: Dies while fleeing during Operation Diamante after years on the run

Case dismissed / dropped

During Operation Diamante near Mapiripán, Guerrero fled a police assault and disappeared into a marshy area. His body was later recovered; authorities concluded that he had drowned while fleeing. At his death, he faced numerous proceedings and warrants and had already been sentenced, notably, to 40 years for enforced disappearance.

State of the evidence: Confirmed
Attribution: Directly implicated

Sources · 3

[1]
Caracol Radio“Alias 'Cuchillo' fue delatado por sus cómplices”: PolicíaPressHigh reliability
[2]
El TiempoAhogado murió 'Cuchillo', 'el asesino de asesinos'PressHigh reliability
[3]
El EspectadorEn su ley llegó a su fin alias 'Cuchillo'PressHigh reliability

Last verified: 14 September 2026

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2008–2010

2008–2010: Suspected infiltration and protection within security forces enabling him to evade operations

Investigation

Colombian authorities publicly suspected leaks and collusion within the security forces involving "Cuchillo". El Tiempo reported investigators' belief that repeated failed capture operations could be explained by infiltrators, with several counter-intelligence investigations.

State of the evidence: Allegations

Sources · 2

[1]
El TiempoAhogado murió 'Cuchillo', 'el asesino de asesinos'PressHigh reliability
[2]
Human Rights WatchParamilitaries’ Heirs: The New Face of Violence in ColombiaNGO reportVery high reliability

Last verified: 14 September 2026

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January–December 2010

2010: Police operations against ERPAC networks of hired killers, financiers, logistics and recruitment

Investigation

Operation Orión Libertad resulted in the arrest of thirteen ERPAC members and explicitly targeted the networks of hired killers, finance, logistics and recruitment within the organisation led by Guerrero. Further operations followed against its weapons and cells.

State of the evidence: Documented

Sources · 1

[1]
Policía Nacional de ColombiaOperación Orión Libertad contra la estructura de alias CuchilloOfficial documentVery high reliability

Last verified: 14 September 2026

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2007–2009

2007–2009: Territorial war in Llanos for control of drug trafficking routes and markets

Allegations

From 2007, Guerrero's ERPAC fought other armed factions for control of the Llanos. Human Rights Watch describes a violent struggle over territory, corridors and the coca economy after paramilitary demobilisations.

State of the evidence: Documented

Sources · 2

[1]
Human Rights WatchParamilitaries’ Heirs: The New Face of Violence in ColombiaNGO reportVery high reliability
[2]
InSight CrimePedro Oliverio Guerrero, alias ‘Cuchillo’High reliability

Last verified: 14 September 2026

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14 April 2009

April 2009: Sentenced to eleven years for aggravated criminal conspiracy, aggravated theft and forced displacement

Conviction

A court sentenced Guerrero to eleven years in prison for aggravated criminal conspiracy, aggravated theft and forced displacement. The case concerned two rural farms in San Martín, Meta, where men from the Guaviare Bloc threatened the person in charge, forced him to leave and took, among other property, 230 cattle and 100 mares, with assets valued at more than 500 million pesos.

State of the evidence: Established by a court
Attribution: Accused

Sources · 1

[1]
El EspectadorAlias ‘Cuchillo’ es condenado a 11 años de prisiónPressHigh reliability

Last verified: 14 September 2026

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1999–2004

1999–2004: Command of Héroes del Guaviare Front / Centauros Bloc and control of cocaine routes

Investigation

Guerrero took command of the Héroes del Guaviare Front within the AUC's Centauros Bloc. Institutional and specialist sources describe the structure as tasked with consolidating AUC territorial control and routes used for cocaine production, transport and trade, as well as arms trafficking, in the Llanos.

State of the evidence: Documented
Attribution: Directly implicated

Sources · 3

[1]
Unidad de Restitución de Tierras (Colombia)Resolución RT 01013 de 30 de septiembre de 2025Official documentVery high reliability
[2]
Human Rights WatchParamilitaries’ Heirs: The New Face of Violence in ColombiaNGO reportVery high reliability
[3]
InSight CrimePedro Oliverio Guerrero, alias ‘Cuchillo’High reliability

Last verified: 14 September 2026

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September 2004

2004: Authorities and researchers attribute role in Miguel Arroyave's murder to Cuchillo

Allegations

After internal warfare within the Centauros Bloc, its leader Miguel Arroyave was murdered in 2004. Human Rights Watch notes that public officials attributed responsibility for his death to "Cuchillo", following an internal power struggle that subsequently divided the bloc between Héroes del Llano and Héroes del Guaviare.

Attribution: Directly implicated

Sources · 1

[1]
Human Rights WatchParamilitaries’ Heirs: The New Face of Violence in ColombiaNGO reportVery high reliability

Last verified: 14 September 2026

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26 September 2001

26 September 2001: La Cascada massacre at Puerto Concordia under Centauros Bloc control

No legal proceedings

A resolution from the Land Restitution Unit traces the arrival of the Centauros Bloc and Héroes del Guaviare Front under Guerrero's command in Puerto Concordia, followed by the massacre of eight people at La Cascada by paramilitaries identified as AUC members. The episode occurred during the takeover of a strategic corridor in Guaviare.

State of the evidence: Documented

Sources · 1

[1]
Unidad de Restitución de Tierras (Colombia)Resolución RT 01013 de 30 de septiembre de 2025Official documentVery high reliability

Last verified: 14 September 2026

Add to this entry

années 2000

2000s: Murders, threats and seizure of 25,000-hectare property under Héroes del Guaviare Front

Allegations

A land dispossession case describes a family targeted by the Héroes del Guaviare Front under Guerrero's command after refusing to sell approximately 25,000 hectares on a strategic corridor at a knockdown price. According to the reported evidence, three of the six family members were killed and dismembered.

State of the evidence: Documented

Sources · 1

[1]
El TiempoLos 'paras', segundo grupo involucrado en el despojo de tierrasPressHigh reliability

Last verified: 14 September 2026

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II. Documented background

Documented biographical or institutional milestones (elections, appointments, foundings, acquisitions…). These are not controversies and are not counted as such.

2003–2006
2003–2006: Enters AUC demobilisation process without actually surrendering to justice
Guerrero appeared in the paramilitary demobilisation process alongside factions originating from the Centauros Bloc, but Human Rights Watch notes that he ultimately did not surrender to the authorities. He subsequently resurfaced as leader of a successor armed organisation.
Sources · 2
1. Human Rights Watch — Paramilitaries’ Heirs: The New Face of Violence in Colombia
2. InSight Crime — Pedro Oliverio Guerrero, alias ‘Cuchillo’
années 1980–1989
1980s: Criminal beginnings around Gonzalo Rodríguez Gacha and Llanos paramilitary groups
Pedro Oliveiro Guerrero, later known as "Cuchillo", began his criminal career in the armed network financed by Gonzalo Rodríguez Gacha, a leader of the Medellín cartel. After Rodríguez Gacha's death in 1989, he continued his career in paramilitary structures in the eastern Llanos.
Sources · 2
1. InSight Crime — Pedro Oliverio Guerrero, alias ‘Cuchillo’
2. El Espectador — En su ley llegó a su fin alias 'Cuchillo'

III. Constellation of documented links

No documented link with another published profile for now.

Two profiles are linked when a documented controversy of one names the other. The link points to that controversy and its sources; it does not indicate a personal relationship.

IV. Has something changed?

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I. Documented controversies

Sources · 2

Sources · 1

Sources · 3

Sources · 3

Sources · 2

Sources · 1

Sources · 2

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Sources · 3

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Sources · 1

II. Documented background

2003–2006: Enters AUC demobilisation process without actually surrendering to justice

1980s: Criminal beginnings around Gonzalo Rodríguez Gacha and Llanos paramilitary groups

III. Constellation of documented links

IV. Has something changed?

Support the archive