<p>An earthquake of magnitude 7.5 struck the South Sandwich Islands region in the South Atlantic Ocean, the US Geological Survey said on Thursday, adding the quake had a depth of 63 km.</p>.<p>The US Tsunami Warning System said there was no tsunami warning after the quake.</p>
<p>An earthquake of magnitude 7.5 struck the South Sandwich Islands region in the South Atlantic Ocean, the US Geological Survey said on Thursday, adding the quake had a depth of 63 km.</p>.<p>The US Tsunami Warning System said there was no tsunami warning after the quake.</p>