An earthquake measuring 4.0 degrees on the open-ended Richter scale shook Iran's already quake-stricken province of Qazvin early today, the state IRNA news agency reported.
The earthquake, which occurred shortly after midnight, hit the southern parts of Qazvin city, IRNA said, adding that there were no reports yet of damage.
Qazvin was hit by an earthquake measuring 6.3 degrees on the open-ended Richter scale Saturday, leaving 229 people dead and 1,300 others injured.
About 9,500 homes and buildings were destroyed, mainly villages around the town of Avaj in the south of the province, according to one official.
Iranian officials have put the number of homeless at 12,000, but the United Nations refugee agency has said as many as 80,000 people are in need of tents.
Iranian President Mr Mohammad Khatami is scheduled to travel to the quake-hit areas later today to see the extent of the damage for himself.
Interior Minister Mr Abdolvahed Mussavi-Lari had stones thrown at his convoy in Avaj when he visited on Sunday, as crowds called on the authorities to speed up the provision of aid.
Iran is one of the world's most quake-prone regions with daily tremors a regular occurrence.
AFP