LIMA: A 5.3 magnitude earthquake in southern Peru killed at least four people and injured more than two dozen, authorities said on Monday. At least 40 houses were destroyed by the Sunday quake, the country's National Civil Defense Institute said on Monday. The quake, in the Caylloma province of the copper-producing region Arequipa, struck 8 kilometers (5 miles) deep at 9:58 p.m. local time (0258 GMT) on Sunday, the Geophysical Institute of Peru said. The USGS reported the earthquake as having a 5.4 magnitude.