MUMBAI: The elite National Security Guard (NSG) was under pressure to use gas to neutralise the heavily armed Lashkar-e-Taiba terrorists during the Mumbai terror attacks in India last year but the idea was shot down for fear of repeat of another Russian theatre disaster. JK Dutt, who then headed the NSG and the operations in the two luxury hotels - Taj and Trident - and the Jewish house in Mumbai, dreaded the use of gas because he did not want casualties that could have been more than what the terrorists would have caused. He actually feared a repeat of the 2002 Moscow theatre hostage crisis during which the Russian forces had used an unknown chemical agent into the crowded theatre where about 850 people were held hostage.