Bahrain has been criticised by Amnesty International after several protesters were arrested during demonstrations ahead of Sunday's Formula One race.
– Amnesty International statement
We are seeing nothing but crackdowns and token gestures to clean up the country’s image
The human rights group warned that the Gulf Arab state was inviting a repeat of last year's violent Grand Prix clashes.
Bahrain's state news agency reported last night that a male suspect in custody had confessed to burning a car that had exploded in the country's financial district on April 14.
Four others were arrested in connection with stealing and burning a car and another person was detained over an accusation he blocked a main road and caused damage to a Bahraini's car.