Mob of 150 attacked troops, polling staff at Cooch Behar booth, 5-6 suffered fatal injuries, says CISF CISF has said a mob of 150 people attacked the security forces and polling staff at the Sitalkuchi booth in Cooch Behar, which led to the firing. advertisement UPDATED: April 10, 2021 14:56 IST A mob of over 150 people attacked the troops at the Cooch Behar polling booth on Saturday. As TMC, BJP, Mamata Banerjee and PM Narendra Modi traded barbs over the CISF firing in Cooch Behar that led to the deaths of at least four people, the security forces have issued a statement saying the troops were first attacked by a mob.