Some Oil Marketing Companies, who want to remain anonymous told that the marginal increases in price is due to the the increment in FOB costs- which are essentially the costs of transporting petroleum products into the country.
This has resulted in the marginal increase in Diesel prices. Liquified Petroleum Gas (LPG) will also see an increase in price.
Prices of Petrol, however have remained stable and may even decrease in some instances. It is difficult to tell what percent of change the products would see come tomorrow.