Iraq has extended an entry ban for any non-Iraqis coming from Iran, the prime minister said, as authorities in Tehran announced 15 more cases of coronavirus and a death toll of eight.

Baghdad had banned crossings by non-Iraqis from Iran on Thursday for three days and Prime Minister Adel Abdul Mahdi said on Saturday night that the ban would be extended. He did not specify until when.

"The prime minister ordered the ... halting of receiving travellers from the Islamic Republic of Iran except for Iraqis," his office said in a statement.

Neighbouring Iraq and Iran, both home to Shi'ite Muslim majorities, share close religious, political, and trade ties. Iran has suspended religious pilgrimage trips to Iraq. Iraqi Airways suspended flights to Iran.

Iraq's health ministry said it had detected no cases in the country.

(Reporting by Ahmed Aboulenein; editing by Philippa Fletcher) ((ahmed.aboulenein@tr.com; +964 790 191 7021; Reuters Messaging: ahmed.aboulenein.thomsonreuters.com@reuters.net))