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A worker rides a bike in front of the reactor building of the Bushehr nuclear power plant, just outside the southern city of Bushehr, Iran in this 2010 file photo. Image Credit: AP

A 4.9 magnitude earthquake struck 10 km south-east of Borazjan, Iran, at 2.20am GMT according to USGS.

Reports said the quake hit near a nuclear plant, but added that it was a "natural" event.

The world was shaken by the news of Iranian missiles hitting Iraqi bases housing US-led coalition personnel, and the crash of a Ukrainian passenger jet shortly after take-off from Tehran's airport on Wednesday.