A 7.8-magnitude earthquake has struck the Alaskan peninsula, reports the US Geological Survey (USGS).
The quake occurred at a depth of 10 km (6 miles), said the USGS, some 75 miles south of the city of Chignik.
The US National Tsunami Warning Center has since published a tsunami warning for Chignik and the Alaskan peninsula.
An earlier alert from the GFZ German Research Centre said the quake was 7.4-magnitude, which was later revised-up.
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