Among the actions that Landázuri is accused of is the car bomb attack on the San Lorenzo Police Station (Ecuador), the kidnapping of twelve anti-narcotics police officers in the La Espriella district of Tumaco (Colombia); as well as five Ecuadorian citizens in the border area between Ecuador and Colombia.
According to the Ecuadorian Police report, he was the leader of the Daniel Aldana mobile column while the FARC was active and then assumed the role of military leader of the dissident group Oliver Sinisterra Front, after the death of its leaders. Walter Patricio Arizala (‘Guacho’) and Luis Alberto Bermeo (‘Pitufín’).
As ‘commander’ of the Oliver Sinisterra Front, he is credited with having created a criminal alliance with the Pacific Guerrilla Coordination structure and having criminal influence over the Tumaco municipality, in Nariño; and in the province of Esmeraldas.
In these border territories, police authorities relate it to the crimes of drug trafficking, firearms trafficking and supply of supplies for the processing of cocaine hydrochloride.
The border area of Emeralds with Colombiawhere the Oliver Sinisterra Front operates, is one of the most convulsed in Ecuador due to the violence of criminal gangs, which have turned it into a corridor to transport cocaine to the Ecuadorian coast and ports.
The Oliver Sinisterra Front became known in Ecuador in 2018 for the murder of the journalistic team of the newspaper El Comercio, made up of journalist Javier Ortega, photographer Paúl Rivas and host Efraín Segarra, in an action under the leadership of ‘Guacho’, who months later was killed in Colombian territory in a military operation.