Former Rajahmundry MP Undavalli Arun Kumar has castigated Andhra Pradesh chief minister Chandrababu Naidu over cash for vote scam and Section 8 issue. Addressing the media, Undavalli has alleged that AP CM in his one year of administration has failed to concentrate on the required area that has been hit after state division. He also took a dig against Chandrababu Naidu's phone tapping issue .