A magnitude 6.1 earthquake has struck northern Iran early Thursday.
Iranian state television described the temblor as hitting on Wednesday near Mashaad, the country's second-largest city. It offered no immediate information on possible damage or injuries.
The U.S. Geological Survey described the earthquake as a magnitude 6.1.
Iran is prone to earthquakes due to a number of faults in the Middle Eastern nation.
In 2003, around 26,000 people were killed by a magnitude 6.6 quake that flattened the historic southeastern Iranian city of Bam.