Manama Anti-government protesters swarmed into a cultural exhibition for Bahrain's Formula One race on Wednesday shouting ‘Down, down Formula One'.
The demonstrators also shouted messages of support for a jailed activist who has been on a hunger strike for more than two months.
At the exhibition, riot police fired stun grenades and pepper spray as hundreds of protesters pressed close to the stalls and shops. There were no reports of injuries, but several protesters were detained.
Earlier Wednesday, dozens of people shouted anti-government slogans in a neighbourhood that has been an opposition stronghold during the 14-month uprising.
In London, two activists were arrested Tuesday after occupying the roof of the Bahraini Embassy and unfurling a banner bearing pictures of Al Khawaja, a prisoner on hunger strike, and senior Shiite opposition leader Hassan Mushaima. Both are sentenced to life in prison. The protesters have been identified as Mushaima's son, Ali, and 30-year-old Mousa Satrawi.
Al Khawaja's wife, Khadija Al Musawi, told The Associated Press that his family is concerned about what she described as her husband's declining health.