Grenade Attack in Shariff Aguak Injures Four, Underscores Alarming Persistence of Violence in Maguindanao del Sur SHARIFF AGUAK, MAGUINDANAO DEL SUR — A daring grenade attack late Thursday night injured four civilians in Sitio Malinis, Barangay Mother Poblacion, in yet another chilling reminder of the region’s recurring cycle of senseless violence. The explosion, believed to have been caused by a grenade projectile fired from a distance, occurred at around 9:45 p.m. on December 4, tearing throug