The 47-year-old passenger arrived in Karachi from Liberia via Doha and appeared to be in poor health condition as he made his way out of the international arrival area.
After a brief medical assessment, the suspected patient was sent to Jinnah hospital, while his blood samples were sent to Islamabad for testing.
Earlier in Faisalabad, a suspected Ebola patient was later found out to be in the terminal stage of hepatitis C, coupled with an episode of dengue hemorrhagic fever.
Ebola virus has infected over 15,000 people in West Africa since it was first reported in Guinea in March, according to the WHO. Although the number of cases in Liberia appears to be falling, Sierra Leone and Guinea are witnessing a steep rise in the number people who are newly infected. Mali is currently fighting its second outbreak.
Ebola virus disease, formerly known as Ebola haemorrhagic fever, is a severe, often fatal illness in humans. It is transmitted to people from wild animals and spreads in the human population through direct contact with bodily fluids of an infected parent.