After a small plane crashed in an isolated mountain region of western Guatemala on Friday, scores of villagers carried off bags of cash, the authorities said. The plane smashed into a hill in the town of Nuevo Porvenir, about 90 miles from the Mexican border. All six people aboard were killed. A spokesman for firefighters said he saw a pistol in the wreckage and that villagers took luggage and cash in both dollars and Mexican pesos. Villagers also demanded payment as firefighters tried to remove the bodies, the spokesman added.