Several feared trapped after explosion at illegal firecracker factory in Varanasi. Several people are feared trapped after an explosion at an illegal firecracker factory in UP's Varanasi triggered a collapse. The blast was reported from Sarang Talab area, under the jurisdiction of Sarnath police station in Varanasi. Police and fire engine units are present at the scene. CM Yogi Adityanath directed officials to reach the site immediately and expedite relief operations.