NNPC Limited (NNPCL) has stated that its Group Chief Executive Officer (GCEO), Mallam Mele Kyari is not responsible for the hike in the prices of the Premium Motor Spirit (PMS), popularly known as petrol. On Tuesday, some protesters stormed Abuja headquarters of the oil giant, demanding Kyari’s resignation over the increase in the prices of petrol nationwide. Reacting to the …