The first earthquake - a magnitude 6.0 tremor - has hit near a city with 800,000 people in residence
Three earthquakes rattle eastern Iran
Three earthquakes hit eastern Iran in quick succession early on Friday, the first a fairly strong magnitude 6.0 tremor that struck at a shallow depth close to the city of Kerman.
It was followed by two 5.0 and 5.1 aftershocks in the same area, the US Geological Survey said.
"For the moment, no deaths have been reported but there has been destruction in several villages," Hossein-Ali Mehrabizadeh, an official with the crisis unit in Kerman, told Iranian state television.
With the tremors hitting about 60 kilometres north of Kerman, the USGS modelling predicted a low chance of widespread loss to life or property.
The University of Tehran's seismology centre gave slightly different figures, announcing an earthquake of 6.1, followed by aftershocks of 5.1 and 4.
The latest tremors come just over two weeks after a 7.3 quake killed more than 500 people in western Kermanshah province, close to the border with neighbouring Iraq.
Iran sits on top of where two major tectonic plates meet and sees frequent seismic activity.
Friday's quake hit around 200 kilometres northwest of the ancient city of Bam, which was decimated by a catastrophic quake in 2003 that killed at least 31,000 people.
In 1990, a 7.4-magnitude quake in northern Iran killed 40,000 people, injured 300,000 and left half a million homeless, reducing dozens of towns and nearly 2,000 villages to rubble.
Iran has experienced at least two other major disasters in recent years; one in 2005 that killed more than 600 people and another in 2012 that left some 300 dead.