It said those injured in the quake, which struck at 4:45 a.m. (0015 GMT), were treated on the spot, state television reported.
The tremor hit an area around the city of Boroujerd, about 320 km (200 miles) southwest of Tehran, it said.
State media did not give details of any damage.
Iran is criss-crossed with faultlines and is regularly hit by earthquakes.
Last Mod: 01 Mayıs 2008, 13:56