A stowaway on a British Airways jet was found dead after falling on a roof as the plane approached London Heathrow Airport, authorities said Friday.

It’s unclear whether the man had crouched in the wheel well, a common hiding place for stowaways.

A second man who was hiding in the undercarriage of the plane was hospitalized with injuries, the airline said.

The plane was flying from Johannesburg to London when the man fell Thursday and landed above a business in Richmond, southwest London. Johannesburg and London are about 6,000 miles apart, and the flight is nearly 12 hours long.

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