An earthquake measuring 5.9 on the Richter scale struck Iran's southern province of Bushehr on Sunday, state television reported.
The epicentre of the quake was the town of Rig and hospitals in nearby cities and provinces were on alert, with rescue teams and 50 ambulances sent to the area, a regional official told state TV.
Electricity and landline telephone and internet in the regional city of Gonaveh had been cut off "and people are taking to the streets for fear of earthquakes," news agency Tasnim reported.
An Iranian government official told Reuters there were no reports of damage at the Bushehr nuclear complex, situated on Iran's Gulf coast.
The quake was centred 100 km away from the plant and was relatively shallow - only 10 km deep according to Iranian media - which would have amplified the shaking.
Media reported nine aftershocks and posted pictures that showed collapsed mud brick walls in some villages.
Two people were injured in Gonaveh and were being taken to hospital, state media quoted the head of the Bushehr University of Medical Sciences, Saeed Kashmiri, as saying.
Thailand's Queen Mother Sirikit, who brought glamour and elegance to a postwar revival in the country's monarchy and in later years, would occasionally wade into politics, has passed away at the age of 93, the Thai Royal Household Bureau said on Saturday.
Thailand's prime minister Anutin Charnvirakul will travel to Malaysia to sign a ceasefire deal with Cambodia that US President Donald Trump is set to witness after he pulled out of the ASEAN Summit due to the death of the kingdom's Queen Mother Sirikit on Saturday.
Britain's medicines regulator said on Friday it had made the world's largest seizure of unlicensed weight-loss medicines, dismantling a factory that made jabs labelled as containing the ingredient in Eli Lilly's Mounjaro.
US President Donald Trump will test his deal-making capabilities on a trip to Asia, a region battered by his hardball trade policies, while doubts hang over his highly anticipated meeting with China's Xi Jinping.