Patna, Oct. 17 -- Unidentified criminals shot dead Congress leader and district board member`s brother under Parbatta police station area in the district today. Naugachhia police superintendent Nidhi Rani said here four outlaws on two motorcycles gunned down Sonu Rai (34), brother of district board member and Congress leader Gaurav Rai, near Jagatpur village when he was going to his native Tulsipur village under Bihpur police station area on his bike. Mr Rai died on the spot while the miscreants made good their escape. The SP said motive behind the murder was not immediately known. A suspect had been arrested in this connection. She said a rival of Gaurav Rai in the district board election Rakesh Rai might be involved in the crime. Meanwhil...