A Liberian man who died in Nigeria's commercial capital Lagos on Friday tested positive for the deadly Ebola virus, Health Minister Onyebuchi Chukwu said.Patrick Sawyer, a consultant for the Liberian finance ministry in his 40s, collapsed on Sunday after flying into Lagos, a city of 21 million people, and was taken from the airport and put in isolation in a local hospital. Nigeria confirmed earlier on Friday that he had died in quarantine."His blood sample was taken to the advance laboratory at the Lagos university teaching hospital, which confirmed the diagnosis of the Ebola virus disease in the patient," Chukwu told a press conference on Friday. "This result was corroborated by other laboratories outside Nigeria."However, at a separate press conference held by the Lagos state government at the same time, the city's health commissioner, Jide Idris, said that they were only "assuming that it was Ebola" because they were "waiting for a confirmative test to double check" from a laboratory in Dakar.Paul Garwood, spokesman for the World Health Organization (WHO) in Geneva, said the U.N. health agency was also still waiting for test results."We're still waiting for laboratory-confirmed results as to whether he died of Ebola or not," he said.It could not be immediately determined why there was a contradiction in the comments from central government and city officials.