Jan. 14 (UPI) -- El Salvadorian President Nayib Bukele traveled to Costa Rica during the final stretch of that country's presidential campaign, triggering a fresh political and legal controversy.

Bukele's main public activity was attending a midday ceremony Wednesday to mark the start of construction of the Center for High Containment of Organized Crime, known by its Spanish acronym CACCO, a new maximum security prison promoted by the Costa Rican government.

The facility is a smaller version of El Salvador's Terrorism Confinement Center, or CECOT, built under Bukele's administration to hold members of criminal organizations.

The Salvadoran government donated the prison blueprints to Costa Rica, a contribution that President Rodrigo Chaves' administration says saved an estimated $25 million, according to Costa Rican outlet El Observador.

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