Bahrain Mirror (AP): Bahraini authorities have launched a new criminal case against the country's top Shiite opposition figure over comments posted on his Twitter account while he is behind bars.

The official Bahrain News Agency reported Sunday that the case against Sheikh Ali Salman has been referred to the Public Prosecution office "following violations posted on his Twitter account." It did not elaborate.

Salman is the secretary-general of the al-Wefaq Shiite political opposition group and was a key figure in the 2011 Arab Spring-inspired uprising against the Sunni monarchy. He was sentenced to four years in prison in June after being found guilty on charges that included incitement and insulting the Interior Ministry.

Al-Wefaq said Salman was taken for questioning by prosecutors.