The National Investigating Agency will investigate the case of arrest of CPI (Maoist) Central Committee member Sudhakar’s brother B Satynarayan and his aid S Satyanarayan Reddy. Reddy and Satyanarayan were arrested by State police under Chutiya Police Station in Ranchi on August 30 with Rs 25 lakh and half kg gold. The government has given approval to NIA probe as the case prima facie appears to be connected with Maoists and terrorism.