Petrol price is likely to go up by Rs 3 per litre while diesel price is expected to be slashed by Rs 3.10 from next week. OGRA would be sending its summary to the ministry of petroleum tomorrow in this regard. If the petrol price is increased as proposed, then CNG price would also rise by Rs2.50 per kilo, as these two prices are correlated. Sources said that earlier oil marketing companies had sent their summary relating to the POL prices proposing increase in petrol price by Rs 3 per litre, while a cut in the diesel price by Rs 3.10. Kerosene and light diesel prices are also expected to be slashed by 35 paisas per litre.