This year's re-scheduled Bahrain Formula One Grand Prix cannot go ahead because of the situation in the country and opposition from teams, commercial supremo Bernie Ecclestone said yesterday.

"Hopefully there'll be peace and quiet and we can return in the future, but of course it's not on," the 80-year-old told the BBC.

"The schedule cannot be rescheduled without the agreement of the participants ... they're the facts."

There was no immediate comment from the governing International Automobile Federation, while many team staff were travelling to Canada for Sunday's race in Montreal.

The teams have already made clear that they do not want to go to Bahrain on October 30 or extend the season into December for logistical reasons.

The race in the Gulf kingdom was originally scheduled as a March season-opener but had to be postponed due to bloody civil unrest and a crackdown on anti-government protesters. The FIA said on Friday that Bahrain would be reinstated for October 30, a date originally assigned to India's inaugural race which would be shifted to a December date as the last race of the season.

The teams have said they do not want to be racing in December, since that would put an intolerable burden on their staff, and are in a strong position to prevent that from happening.

"Until the written agreement of the teams is forthcoming, you can't actually change the date. It can't be done," former FIA president Max Mosley had said on Tuesday.