At least 159 people have died as a result of a massive 6.8-magnitude earthquake that rocked a mountainous area of central Italy, PM Matteo Renzi has said. 86 of those people lived in Amatrice, which is 75 percent destroyed, according to the town's mayor. The tremor was felt across Italy, from Bologna in the north to Naples in the south. Rescue teams are using heavy lifting equipment and their bare hands as they continue to search for survivors after nightfall.