A Canadian journalist who traveled from West Africa and showed an elevated body temperature upon arrival at Tokyo's Haneda airport Monday tested negative for the Ebola virus, the health ministry said Tuesday.

Out of an abundance of caution, the man — who currently shows no signs of fever — will remain hospitalized and under observation at the National Center for Global Health and Medicine in Tokyo's Shinjuku Ward for at least three days, the ministry said.

He will be released if another blood test, to be carried out after three days, comes up negative, it added.