San Juan, Jul 4 (EFE).- Four men who fired off guns on a beach in southern Puerto Rico were killed by an angry father who mistakenly thought his daughter had been struck by one of their shots, police said Tuesday. Ernesto Albarran, 19; Cristian Flores, 21; Armando Castro, 25, and his brother Angel, 20, fired shots Monday night on La Jungla beach in the town of Guanica, according to the preliminary investigation. Adan Torres Quiñones noticed the gunplay and thought his daughter had been hit when he saw her throw herself on the sand to dodge the bullets. Enraged, he...