On October 27 , in the town of Peñuelas , the police surrounded and fired on a caravan of Nationalists , killing four . 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
San Juan Nationalist revolt
San Juan Nationalist revolt
Utuado uprising