The epicenter was located some 90 kilometers (55 miles) northeast of Iran’s sole Iran’s nuclear power plant in the port of Bushehr. Authorities say it was built to withstand powerful quakes. and has been periodically shaken by temblors.
Iran lies on major seismic faults and experiences one earthquake a day on average.
In 2003, a magnitude 6.6 earthquake flattened the historic city of Bam, killing 26,000 people. A magnitude 7 earthquake that struck western Iran in 2017 killed more than 600 people and injured more than 9,000.