Dozens of doctors and nurses who treated injured anti-government protesters during the months of unrest in Bahrain are on trial just days after the Gulf kingdom lifted emergency rule.

The 47 health professionals have been detained since March, when Bahrain imposed martial law to quell a wave of Shiite-led demonstrations for greater freedoms in the island nation.

The 23 doctors and 24 nurses were charged with participating in attempts to topple Bahrain's Sunni monarchy. They were arraigned Monday during a closed-door hearing in a special security court.

Authorities lifted emergency law Wednesday and warned opposition supporters that any further challenges to the regime will have "consequences."