Red Bull team principal Christian Horner has revealed that Mark Webber left it right until the last minute to tell the team he is quitting Formula One.
Veteran Webber confirmed on Thursday morning that he would leave the sport at the end of the season to join up with Porsche's new sportscar programme, which will include entry into next year's Le Mans 24 Hours.
Although the Australian claimed Red Bull owner Dietrich Mateschitz "has been completely up to speed with my thinking in the last few months", Horner says he only found out about the decision minutes before it became public.
"I had a call from Mark this morning at about 9am," Horner is quoted as saying by Autosport.
"I spoke with him and he said that he had reached this decision. He obviously decided that the timing is now right for him to make that step in his career, and all we can do is wish him the best of luck in the future."
He added: "I think he has obviously decided to take things into his own hands. The guys in the factory are a bit more disappointed that they read it on the Internet rather than heard something direct. But that is the way these things are sometimes."
Asked if Webber could have given the team more notice, Horner replied: "I suppose an hour's notice is a bit short... but a decision for a driver to retire can only come from him.
"Mark is quite a private person. He reached this decision and then obviously communicated it today."