On October 30 , the Nationalists staged uprisings in the towns of Ponce , Mayagüez , Naranjito , Arecibo , Utuado ( Utuado Uprising ) , San Juan ( San Juan Nationalist revolt ) , and Jayuya . In the pre-dawn hours of October 29 , the Insular Police surrounded the house of the mother of Melitón Muñiz Santos , president of the Peñuelas Nationalist Party , in Barrio Macaná , where they were storing weapons for the Nationalist revolt . Without warning , the police fired on the house and a gunfight ensued . Two Nationalists were killed and six police officers were wounded . Nationalists Melitón Muñoz Santos , Roberto Jaume Rodríguez , Estanislao Lugo Santiago , Marcelino Turell , William Gutierrez and Marcelino Berríos were arrested and accused of participating in an ambush against the local Insular Police
San Juan Nationalist revolt
San Juan Nationalist revolt
Jayuya Uprising