The Dutch Safety Board will decide whether to open its own inquiry when the airline's investigation is finished, van der Weegen said.

CNN: Dutch 737 pilot locked out of cockpit while co-pilot sleeps

But despite dominating the game, Enyimba did not open scoring until the 87th minute, when substitute Omolade Ajibade finished off a smooth move.

BBC: SPORT | Football | African | Violence mars Enyimba victory

Kaymer finished seventh in the Open at St Andrews earlier this year when he closed with three successive bogeys.

BBC: Martin Kaymer wins Dunhill Links Championship

He has contested every Open since he turned professional in 1994, but only finished in the top 10 once when he was third at Troon in 2004.

BBC: Mickelson confirms Open absence