The season-opening Bahrain Formula One Grand Prix, due to be staged on March 13, has been cancelled due to the political unrest in the Gulf state.
The widely anticipated move was confirmed after reports emerged that the teams had decided not to go ahead with a scheduled testing session at the circuit next week.
The decision to cancel was annnounced by Bahrain's Crown Prince.
The final pre-season test session will now be held in Barcelona in the second week of March and the new season will start with the Australian Grand Prix in Melbourne on March 27.
It's possible the Bahrain round will be rescheduled.