ABUJA (Reuters) - Nigeria’s first confirmed coronovirus case was not detected at airport, and traveled through Lagos before he took ill and went to a hospital, the country’s health minister said on Friday.

The Italian man, who authorities said arrived in Nigeria from Milan on the evening of Feb. 24, did not have symptoms when the plane landed.

Authorities are now working to “meet and observe” all those who were on the flight with him, and are also identifying all the people he met and places he visited in Lagos, a city of some 20 million people, before reporting to the hospital.