Karnataka Chief Minister BS Yediyurappa today said he was "not happy" with the arrest of political rival DK Shivakumar. The senior Congress leader was arrested this evening by the Enforcement Directorate, which was questioning him in a money laundering case. The agency said he was not cooperating with the investigation -- an allegation also made against former union minister P Chidambaram by the Central Bureau of Investigation. "Let me tell you one thing, the arrest of DK Shivakumar did not bring me any happiness. I will pray to God that he will be out soon," Mr Yediyurappa said.