A south Texas cemetery worker was killed when a tombstone weighing more than a ton fell on him when he was trying to level the tilted slab, police said on Thursday. The 64-year-old man was using a jack and a wooden plank to adjust a 5-foot-high (150-cm) stone that weighed between 2,000 to 4,000 pounds (900 to 1,800 kgs) at the cemetery in Edinburg, Oscar Trevino, a local police lieutenant, told Reuters. "He died from internal injuries due to major, crushing chest trauma," Trevino said, quoting a preliminary autopsy report.