Iranian state television has raised the toll from Saturdays' twin earthquakes to over 250 dead and at least 2,000 injured.

Images broadcast on the main news channel showed dozens of families of sleeping outdoors in parks, with blankets laid out on the ground. Some were crying, others shivering from chilly weather in the mountainous region hit by the quake in the northwestern part of the country.

TV also showed many people evacuated by rescue teams on stretchers to hospitals and clinics. Other images showed the injured in hospital beds.