A passenger scheduled to travel out of the country on Wednesday morning slumped and died at the Murtala Muhammed International Airport, Lagos.
Eyewitnesses said the deceased, identified as Ademola Adeleke, had yet to check in when the incident occurred.
It was gathered that the passenger, who arrived at the airport early in the morning for his flight, slumped and started gasping for breath at about 5.30am.
He was said to have received help from a passenger who tried to revive him by pumping his chest before Port Health officials arrived.
An eyewitness, however, stated that Adeleke did not respond to treatment even after the health officials tried to revive him by giving him oxygen.