[2][3][4] He confessed to being responsible for the death of 11 people: 10 older adults and one minor;[5] the last three murders were perpetrated by Juan Carlos and his brother, José Alfredo Villa, who also accepted his participation in several crimes.
[6][7] The authorities declared him a "serial killer",[2] his modus operandi consisted of posing as a person with a disability to gain their trust and then murder them with knives.
[6] At the time of his capture, he accepted without regret the direct participation in all the murders, one of the psychological and behavioral characteristics of a serial killer.
[8][9] The bodies of Francisco Javier Gaviria Valencia and Fanny Ortiz Cruz were found in a sidewalk located in the municipality of Marsella.
[3] The modus operandi consisted of gaining the trust of the people with whom Villa interacted, specifically in the municipalities of Pereira, Dosquebradas, Santa Rosa de Cabal, Marsella and Santuario, places where he moved constantly.