At least 332 people were killed in Iran and Iraq when a magnitude 7.3 earthquake jolted the region on Sunday, state media in the two countries said, and rescuers were searching for dozens trapped under rubble in the mountainous area.

State television said more than 328 people were killed in Iran and at least 2,500 were injured. Local officials said the death toll would rise as search and rescue teams reached remote areas of Iran.

The earthquake was felt in several western provinces of Iran but the hardest hit province was Kermanshah, which announced three days of mourning. More than 236 of the victims were in Sarpol-e Zahab county in Kermanshah province, about 15 km (10 miles) from the Iraq border.