Several Formula 1 teams expect next weekend's Bahrain Grand Prix to be cancelled amid security concerns.

Civil unrest has thrown the event into doubt, and BBC Sport report that a number of teams do not expect the 22 April race to go ahead.

Last year the race was cancelled with the backing of Bahrain authorities, however they are not as keen on this occasion.

The decision, as a statement released from the Formula One Teams Association stressed, is down to the FIA to cancel the event.

Unrest during the 2011 Arab Spring last year led to the GP's cancellation, and violence between protesters and security forces erupted again on Bahrain's streets earlier this year.

Bahrain's majority Shia population has continually demanded democratic reforms from the nation's Sunni rulers, while the government are attempting to quell the protesting.

On Tuesday F1 boss Bernie Ecclestone said no teams had expressed concerns to him, but did hint the race's contract may not be renewed due to a second successive disruption..

Only last week the Bahrain race organisers suggested that holding the GP could unite the country and Ecclestone remained committed to staging the Sakhir race.