A suspected stowaway on a British Airways plane is thought to have plunged to his death after falling from the plane and landing on a shop, while another is in hospital after surviving the journey.
The two men are believed to have clung on to the plane as it flew more than 9,600 kilometres from Johannesburg in South Africa to Heathrow Airport in England.
Police are investigating whether the dead man fell from the aircraft as it came into land after a body was discovered on the roof of a shop in south west London, which was below the flight path.
The body is so far unidentified and enquiries are ongoing as they determine how long it had been at the scene. No next of kin have yet been informed.
Earlier that day, police at Heathrow Airport were called to reports of a suspected stowaway on a flight from Johannesburg to Heathrow.
The man, believed to be aged 24, was found in the undercarriage of the plane and was taken to hospital. His condition is now described as critical.
Whilst Heathrow officers believe they know his identity, they will not release any details of his nationality until it has been fully confirmed.