KHAMMAM: Director General of Police SSP Yadav, who came here on Monday, reviewed the operations being conducted jointly by the police from the state and Chhattisgarh on the inter-state border. The visit which came close on the heels of the Darellli encounter assumed significance. Additional DGP K. Arvinda Rao and IG (Warangal ), Purna Chandar Rao accompanied him.