breaking news Major earthquake strikes off Alaska coast

An earthquake of 7.5-magnitude struck in the Pacific Ocean about 100km off the coast of Alaska, the US Geological Survey (USGS) has said. The quake struck on Saturday at a depth of about 10km at 0858 GMT, the survey said. The epicenter of the quake was located 106km west of Craig, Alaska, according to the USGS. There were no immediate reports of casualties or damage. A local but possibly destructive tsunami was generated by the quake, the Pacific Tsunami Warning Center said. "Sea level readings indicate a tsunami was generated," the US centre said in a statement. "It may have been destructive along coasts near the earthquake epicenter." An earlier reading of 7.7 magintude was based on the open-ended Moment Magnitude scale used by US seismologists, which measures the area of the fault that ruptured and the total energy released.