Two personnel of the Special Task Force were killed and four others injured in an improvised explosive device attack by Maoists in Chhattisgarh's Bijapur district on Wednesday night, police said. 2 jawans killed, 4 injured in IED attack by Naxals in Chhattisgarh's Bijapur The incident took place in the Tarrem area when a joint team of security personnel was returning …