John Saatio was found by a patrol in Los Guido, Desamparados, a canton immediately south of San José, according to a statement from the Public Security Ministry.
As news came over the weekend that Panama would carry out another airlift to Mexico for 3,800 unauthorized Cuban migrants there, hundreds of migrants from across Africa remain in Costa Rica with no way forward.
Advocacy groups in the U.S. are advising Central American immigrants who have entered the country illegally in recent years on how to avoid deportation.