At least five million Tehran residents should flee Iran’s capital because it sits on several fault lines and is threatened by earthquakes, President Mahmoud Ahmadinejad said on Sunday. “We cannot order people to evacuate the city… but provisions have to be made. At least five million should leave Tehran so it is less crowded and more manageable in case of an incident,” Mehr news agency quoted him as saying. Mr Ahmadinejad said the government could offer “land, loans at four per cent interest and substantial subsidies” in the provinces to encourage Tehran residents to leave the sprawling capital.