Costa Rica puts captured drug lord “Diablo” in maximum‑security isolation

Alejandro Arias Monge, known as “Diablo”, was captured on 24‑July‑2026 after a prolonged gunfight in Sarapiquí, ending a decade‑long fugitive run. The operation, carried out by the Organismo de Investigación Judicial (OIJ) with support from the public police and judicial authorities, left five OIJ agents injured—one in critical condition—and resulted in the death of a gang member identified as Ríos Oconitrillo “Coco Guácimo”. Two other high‑profile suspects, including Jonathan Pérez Méndez “Tan”, were also seized.

The United States had offered a reward of up to $500,000 for information leading to Arias’s arrest, and the U.S. Embassy publicly praised the Costa Rican authorities. Following the capture, the Justice Ministry transferred both “Diablo” and “Tan” to the La Reforma prison’s high‑security unit, known as “La Hummer”. A 15‑point protocol, described as unprecedented in Costa Rican history, places them in individual isolation cells with 24‑hour surveillance, no family or intimate visits, no telephone calls, and lawyer meetings conducted only through speaker‑only booths. Inmates must wear orange uniforms, have no personal belongings, and receive medical care inside their cells. Officers interacting with them must wear body‑cameras and, in some cases, ski masks; sniper teams and intelligence units monitor the perimeter continuously. The Ministry of Justice has also proposed that all court appearances be held virtually to avoid any external transport.

Authorities indicated that extradition to the United States may be pursued, given Arias’s alleged involvement in transnational cocaine trafficking from Colombia through Central America to the U.S. and his suspected responsibility for hundreds of murders.