Four CRPF personnel were on Wednesday killed and two injured in an IED blast triggered by Naxals at Lalgarh in West Bengal on the second day of their bandh called in five states.

The blast comes a day after Union Home Minister P Chidambaram asked the Naxals to abjure violence and come for talks. The CRPF men had set out from their camp at Goaltore market to patrol nearby villagers when the blast took place at Ramgarh in Lalgarh police station area in West Midnapore district at 1130 hrs.