At least six people were killed there including three policemen and a border guard, police official Rezaul Karim told reporters.The private Somoy TV put the toll in Kanchpur at 13.Meanwhile, a pro-Islamist television channel, which broadcast live footage of the raid on Motijheel, was forced off the air.Diganta Television???s chief reporter M. Kamruzzaman said that about 25 plain-clothed policemen