There he met with Ramón Emeterio Betances, Juan de Mata Terreforte and Aurelio Méndez Martinez and together they proceeded to plan a major coup. The uprising, which became known as the Intentona de Yauco was to be directed by Betances, organized by Aurelio Mendez Mercado and the armed forces were to be commanded by General Juan Ríus Rivera from Cuba.
He met with Ramón Emeterio Betances, Juan de Mata Terreforte, and Aurelio Méndez Martinez, and they collectively planned a major uprising. The rebellion, which became known as the Intentona de Yauco, was to be spearheaded by Betances, coordinated by Mendez Mercado, and led by General Juan Ríus Rivera from Cuba.