Two former Thai Prime Ministers have been cleared of abuse of power in a case involving an anti-government protest in 2008 that turned deadly. Thailand's highest court in Bangkok on Wednesday acquitted Somchai Wongsawat, his then-deputy Chavalit Yongchaiyudh and two former police officials. They had been accused of authorising the police to use force against protesters who had blockaded the National Assembly building. <br/><br/>A pitched battle erupted, injuring several hundred people and causing two deaths. A judge said the court could not conclude the injuries protesters sustained were from police weapons and grenades.