An earthquake of magnitude 7.2 struck in the Aleutian Islands in the US state of Alaska, prompting a tsunami warning, US agencies said. According to dpa, no damage or casualties were reported in the sparsely populated area. The tsunami warning was lifted about an hour after the quake struck at 6:10 pm Thursday (0310 GMT Friday) near the Fox Islands, about 1,700 kilometers south-west of Anchorage, the US Geological Survey said. It occurred at a depth of 63 kilometers, it said.