Rescuers are busy on the site of a collapsed building in Concepcion, southern Chile, on March 2, 2010. There are still seven people buried in the ruins here. The 8.8-magnitude devastating earthquake which hit Chile on Saturday has killed at least 763 people, reports quoted Chile's emergency office as saying on Tuesday. [Xinhua]

Rescuers Tuesday pulled out 79 survivors and seven bodies from the debris of a collapsed building in Concepcion.

Concepcion, located on the Pacific coast in northwestern Chile, is the worst-hit city in Saturday's massive earthquake, which has left nearly 800 people dead.

To crack down on looting in the city, the Chilean government Tuesday extended a curfew from 15 hours to 18 hours until Tuesday noon.

The authorities also added three towns, Talca, Cauquenes and Constitucion, onto the curfew list to suppress looting.

Raping and violent activities have increased following the quake, which has disrupted power and water supply in the hardest-hit towns of Concepcion and Talca.

During the last few days, the lack of power, drinking water and food caused panic among residents in Concepcion, triggering looting in supermarkets and food stores.

The situation in the city quickly deteriorated to the point that stores were looted even with the presence of the owners.

(Xinhua News Agency March 3, 2010)