Manama's central financial district and the iconic Pearl Roundabout were quiet Wednesday night, despite earlier calls from opposition groups who said they planned to regain their presence there.

Anti-government protestors open their arms in front of military vehicles near Pearl Square in Bahraini capital Manama, on March 16, 2011, after Bahraini police killed at least two protesters and wounded dozens more as they assaulted a peaceful protest camp in the capital's Pearl Square, an opposition party official said. AFP PHOTO/STR (Photo credit should read -/AFP/Getty Images)

Bahrain's defence forces have held the areas since mid-morning and a government-imposed curfew has now gone into effect, while earlier fighting between security forces and protestors moved to villages.