Patna: At least ten CRPF (Central Reserve Police Force) commandos belonging to its elite COBRA battalion were killed and five others injured in a Naxal IED blast in the jungles of Bihar's Aurangabad district, officials said.

The jawans of the COBRA unit were ambushed in the IED blast after which an encounter started yesterday afternoon between the two resulting in the killing of three naxals by late night, they said.