Iran said Thursday, February 20 that three more people have been infected with the new coronavirus that originated in central China, following an announcement the day before that two people had died of the illness caused by the virus in the Iranian city of Qom, The Associated Press reports.

Iran borders Armenia, Azerbaijan Russia, Kazakhstan, Turkmenistan, Afghanistan, Pakistan, Turkey and Iraq.

All schools and universities, including religious Shiite seminaries, were shut down in the holy city of Qom, according to the official IRNA news agency. Other news reports said Iran had recently evacuated 60 Iranian students from Wuhan, the Chinese city at the epicenter of the epidemic.

Qom, located around 140 kilometers (86 miles) south of the capital, Tehran, is a popular religious destination and a center of learning and religious studies for Shiite Muslims from inside Iran, as well as Iraq, Pakistan and Afghanistan and Azerbaijan. It is also known for its cattle farms.

An official in Iran’s health ministry, Kiyanoush Jahanpour said on his twitter account that the number of confirmed cases of the virus in Iran was five, including the two elderly Iranian citizens who died on Wednesday in Qom.

IRNA reported that the three new cases are all Iranians residing in Qom, with one of the infectedhaving visitedthe city of Arak. Mohammad Mahdi Gouya, Iran’s deputy health minister, said they did not appear to have had any contact with Chinese nationals.

Iranian authorities were now investigating the origin of the disease, and its possible link with religious pilgrims from Pakistan or other countries.

Iran’s health minister, Saeed Namaki said the roughly 60 Iranian students evacuated from Wuhan had been quarantined upon their return to Iran and were discharged after 14 days without any health problems.

Iran once relied heavily on China to buy its oil and some Chinese companies have continued doing business with Iran in the face of U.S. sanctions. Unlike other countries — such as Saudi Arabia, which barred its citizens and residents from traveling to China — Iran has not imposed such measures on travel there.