Murray McCully says he knew in advance of the driver switch in Kenya that left four people dead after a Kiwi took control of the vehicle.
David Fellows from Bethlehem College was at the wheel.
Initially a Kenyan was said to be driving.
Mr McCully says he'll consider any request from Kenyan authorities, including extradition of Mr Fellows.
He doesn't accept that he was complicit in a cover up by knowing in advance.
"There was a bit of rumour-mongering and discussion around it that was passed to me because it was perceived that we had an interest and I was told that we should expect to hear something formally and that's how things often work. I was very happy to receive the 'heads up'."
Mr McCully says he's had no approach for Mr Fellows to be extradited at this stage.
"Well it's a matter for the Kenyan authorities to determine what steps they want to take. Clearly after the accident it was a picture of some confusion and some people left the country that they may wish to ask some questions of."
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