The Manipur Police fired several rounds in the air today to disperse a mob that surrounded a police station near the Chief Minister's office in the state capital Imphal. Curfew has been reimposed in the city. The mob, allegedly led by the local youth group Arambai Tenggol, demanded weapons from the police station in protest against what they called the state government's inaction following the killing of a senior police officer by an insurgent sniper in the India-Myanmar border town Moreh yesterday.