Policemen gather for a briefing before heading to a violence-hit area at Pirakata near Lalgarh, some 165 km (102 miles) west of the eastern Indian city of Kolkata, June 18, 2009. India began deploying on Thursday hundreds of police to push back Maoist rebels who declared a "liberated zone" close to Kolkata, sparking unease among investors in the communist-ruled state. (Reuters)