Official says the man probably had legal access to the airport in Nairobi.
Kenyan authorities say there is a high possibility that the man who is believed to have died after apparently stowing away on a Kenya Airways flight was an airport employee.
The man, who has not been identified, is believed to have fallen from the landing gear of a flight from Nairobi, Kenya, into Heathrow Airport, London. His body was found in a London garden.
Gilbert Kibe, the director general of the Kenya Civil Aviation Authority, has told the BBC that the suspected stowaway probably had legal access to the Jomo Kenyatta International Airport in Nairobi, giving him an opportunity to get into the undercarriage of the plane.
Mr Kibe told the BBC that Kenya's Department of Criminal Intelligence, along with the US's FBI, are investigating what happened.