Chennai, Sept. 12 -- Pattali Makkal Katchi (PMK) founder S Ramadoss expelled his son and former Union minister Anbumani Ramadoss from the party on Thursday, in a move that will most likely result in a split in one of the Bharatiya Janata Party's key allies in Tamil Nadu. Ramadoss, 85, and Anbumani, 56, have been sparring over appointments in the party. In April, Ramadoss removed Anbumani from his position as PMK's president and took over the party. The feud escalated in August when he accused Anbumani of planting a bug in his office, a claim currently being investigated by the police. Leaders of the BJP, the AIADMK, and family friends tried to mediate between the two most powerful people in one of the state's largest caste-based parties, but their efforts failed. "The weed called Anbumani has been removed," Ramadoss said at a press conference held at his residence in Thailapuram in Villupuram district.htc...