Three Telangana ministers, including all 11 accused were acquitted on Wednesday by a Railway court in Secunderabad in a 2011 "rail roko" case after the eye witness turned hostile.
The protest was held at the Moula Ali Railway Station on March 1, 2011, demanding separate statehood for Telangana.
The special judicial first class court for the Railways acquitted Nayani Narasimha Reddy, current Home Minister in the Telanagana cabinet, and his colleagues K T Rama Rao and T Padma Rao, along with the 11 accused after the key witness in the case turned hostile.