Dr Rula al-Saffar, former head of emergency medicine at Salmanya hospital, had her conviction and 15 year jail sentence quashed today by the High Criminal Court of Appeal.
The Bahraini medic had been sentenced in September 2011, having been accused of helping last year's uprising against the ruling royal family.
She is one of nine medical staff to have had their convictions cleared.
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Rain in places tonight. Turning windy overnight.