Bahrain has been criticised by Amnesty International after several protesters were arrested during demonstrations ahead of Sunday's Formula One race.
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.
Bahrain police fired tear gas in clashes with rioting youths two days before the Formula One Grand Prix in the Gulf kingdom.
The organisers of this Sunday's F1 Grand Prix in Bahrain have vowed that violent protests against the race will not stop it taking place.