Former Chilean president Sebastián Piñera has died in a helicopter crash, Interior Minister Carolina Tohá said at a press conference on Tuesday. Chilean President Gabriel Boric declared three days of national mourning and ordered a state funeral. The crash occurred in the municipality of Lago Ranco in the Región de Los Ríos, where it had been raining heavily, according to the Chilean newspaper “La Tercera.” The 74-year-old former head of state was piloting the helicopter himself. He lost control near the shore of the lake of the same name, Lago Ranco, and crashed into the water. According to C…