Bernie Ecclestone says a deal to ensure the Italian Grand Prix stays on the calendar beyond 2016 has hit a snag.
It appeared as though a new deal had been agreed towards the end of last year to extend Monza's contract beyond this year's race. However, an inconclusive meeting between circuit officials and Ecclestone this week means the future of the Italian race is once again in doubt.
"I don't know what's going to happen," Ecclestone told Reuters. "It's a little bit Italian at the moment. The only people that can sort this out are the people that are currently involved in Italy.
"There's no deadline. They can take as long as they like, provided it's by the end of this month."
Monza has been on the F1 calendar every season bar one since 1950, but Ecclestone has warned in the past that he is not sentimentally attached to the historic circuit.
"It's Italian -- a lot of conversations at the moment and not much action. They said to me a few months ago 'everything is sorted out, we know exactly where we are and it's all agreed and no dramas'. And now I heard yesterday it's become very political...they'll get on with it. Or not. Nothing we can do about it."