BBC:

The two fugitives were identified as Jhon Gutiérrez Rincón, a Farc rebel who was sentenced to 40 years in prison for kidnapping in 2003, and Olmedo Vargas, who had recently demobilised from the Farc rebel group but who was awaiting trial for alleged theft.

The prison authorities said they had not been able to detect any damage to the structure of the prison or its gates and they were therefore working on the assumption that a guard colluded to help them escape.