Officers of the Central Bureau of Investigation (CBI) raided the home of Venkatesh, a railway contractor and husband of Telugu Desam Social gathering (TDP) working secretary Savithamma, at Penukonda in Sri Sathya Sai district on Friday. They have been looking for some documentary proof, if any, that would result in proving allegations of corruption in sure tasks. The CBI has been raiding the homes and places of work of a number of individuals linked to the railway tasks in a number of cities. The officers left Penukonda within the afternoon.