New Delhi, Oct. 24 -- Over 40 bullets were exchanged during a shootout in Delhi's Rohini early Thursday, in which four members of Sigma and Company gang, wanted in five criminal cases including four contract killings in Bihar, were killed, senior crime branch officers said. In a joint operation, the Delhi and Bihar police teams intercepted a Baleno car with fake registration plates, moving from Ambedkar Chowk towards Pansali Chowk on Bahadur Shah Marg, after tracking the suspects' movement in the city through technical surveillance, joint commissioner of police (crime) Surender Kumar said while sharing details of the shootout at the Delhi Police headquarters. "At 2.20 am, the team members spotted the suspects travelling in a Maruti Baleno car and asked them to surrender. Instead of surrendering, the four occupants of the car fired indiscriminately at our raiding team. Our team members retaliated in self-defence and fired back at them. All four men were injured during the exchange of fire. They were taken to Baba Saheb Ambedkar hospital, where the attending doctors declared them dead at 3.15 am," he added. According to the police officers, the four criminals fired around 25 rounds using five firearms - four semi-automatic and one country-made pistol - they were carrying, while the police team responded with at least 15 bullets. The four deceased criminals were identified as gang leader Ranjan Pathak (25), Bimlesh Mahto (25), Manish Pathak (33), and Aman Thakur (21). Thakur was a resident of Delhi's Karawal Nagar, while the other three were from Sitamarhi district in Bihar, police said. Joint commissioner Kumar said that the crime branch had received information from Bihar's Sitamarhi district police about the presence and movement of four wanted criminals in Delhi....