Bahrain freed opposition leader "Ali Salman" today , a day after his arrest, although it slapped a travel ban on the head of al-Wefaq bloc.
Attorney general "Abdul Rahman al-Said" was quoted as saying by the official BNA news agency that Salman, head of the opposition al-Wefaq bloc, had been questioned over accusations of "incitement to religious hatred and spreading false news likely to harm national security ".
He was also alleged to have "accused institutions of the state of engaging in illegal practices".
The prosecution had ordered the release of al-Wefaq secretary general but "forbade him from any travel for the purposes of the investigation".
The speech was followed by "disturbances, acts of violence and aggression against the security forces that caused injuries in their ranks".
Six opposition groups including al-Wefaq have issued a statement denouncing Salman's detention as an "attack on freedom of expression in Bahrain".