As soon as the plane landed on Tuesday the 40-year-old Liberian was moved into an isolation ward and he died yesterday. It is the first case of Ebola to be confirmed in Nigeria, Africa's most populous country, since the current outbreak began in West Africa earlier this year, according to Nigerian Health Minister Onyebuchi Chukwu.
"All ports of entry into Nigeria including airports, seaports and land boarders are placed on red alert," he said.
Authorities are currently investigating all persons who may have come into contact with the deceased, said Chukwu. "We have already gotten in touch with all the passengers," he said. "We are monitoring and investigating."
The man, a Liberian government official, arrived in Nigeria on Tuesday to attend an international conference and died early yesterday. Blood tests for Ebola returned positive from the Lagos University Teaching Hospital later in the day.
Ebola, one of the world's most deadly and contagious diseases, has killed at least 660 and infected 1,093 in Sierra Leone, Liberia, Guinea, and now Nigeria, according to the World Health Organisation.