(CNN) -- A 5.6 magnitude earthquake shook southern Iran Thursday evening, centered about 39 miles northeast of the Persian Gulf city of Bandar Bushehr, the U.S. Geological Survey said Thursday.
The quake, at a depth of 10 miles, struck at 5:21 p.m. local time. There were no immediate reports of damage.
The city is in Bushehr province, which is the site of a nuclear power plant that went online in 2011.
The damage that earthquakes with magnitudes of 5.0 to 5.9 can produce varies. Near the epicenter, quakes on the middle to upper part of that range could leave negligible damage in buildings of good design and construction, but considerable damage in poorly built or badly designed buildings, the USGS says.