Updated

Two airport vehicles collided on the airfield at Heathrow Airport on Wednesday, killing one man and injuring another.

The Metropolitan Police force said its officers were called just after 6 a.m. to a crash on the taxiway, which Heathrow initially described as a "serious accident involving two vehicles" on the airfield."

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It said one man suffered a broken shoulder in the incident and was in a non-life threatening condition. The other, a man in his 40s, was taken to a hospital, where he died.

The airport said it was working with police to investigate the accident, which did not involve any passengers.

Heathrow Accident 2 AP

Emergency personnel are seen attending to one of the vehicles involved in a crash early on Wednesday morning. (Steve Parsons/PA via AP)

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It said the airfield remains open and staff were working to keep disruption to a minimum. British Airways reported delays to "a small number of our flights."