Jaime Iván Martínez

Jaime Iván Martínez Betancur (born July 16, 1971), known as The Guarne Killer and The Monster of the East, is a Colombian serial killer. He was responsible for the murder of several people, including the killings of his wife and children. The bodies of the victims were exhumed by specialized personnel of the Attorney General's Office, in cooperation with the Technical Investigation Body (CTI), the Unified Action Groups for Personal Liberty (GAULA) and police dogs, who conducted on-site investigations as part of the procedures.

The Colombian authorities suspect that he has killed between 20 and 25 people for a decade. He was sentenced to 42 years in prison by a specialized court in the Antioquia Department.

Crimes It is believed that Martínez committed between 20 and 25 murders in the span of a decade. He also collected objects and personal elements of his victims such as watches, smart phones, jewelry, etc.

He was captured in Guarne by specialized personnel of the CTI, very close to the eastern subregion of Antioquia Department in a farm where he worked as a majordomo and guard, the same place where he committed several of the murders, although it is believed that he has killed others in Medellín and Valle del Cauca Department. Martínez had worked as a farmer, but also held other jobs in surveillance and gardening.

Condena Martínez was sentenced to 42 years imprisonment for the murder of Arango, Gil and her two children. He was charged with several crimes, including forced disappearance and murder.