Security forces and protesters in Bahrain clashed at a rally to mark the release of doctors jailed following protests in the Gulf kingdom, DPA cited Al Jazeera Thursday.
An unspecified number of protesters were injured in the clashes in the western area of al-Dayar, the Doha-based broadcaster reported, quoting witnesses.
There was no immediate official comment on the report.
A military court on Wednesday ordered the release of 11 medical professionals, a week after they went on hunger strike in protest against their detention.
The group is accused of possessing weapons and lending support to pro-reform protesters.
Bahrain's opposition welcomed their release as a vital step towards easing political tensions in the country.
In a statement, the opposition also called for the swift release of all political detainees.
More than 30 people have been reported killed and hundreds arrested in the small Gulf island since pro-democracy protests began in February.