BY A STAFF REPORTER: Diesel prices 100 cross in 6 districts of West Bengal. On Tuesday, diesel crossed Rs 100 in Purulia, Behar, Darjeeling, Alipurduar, Murshidabad and Nadia. The price of petrol in Kolkata has been reduced to Rs 114.28 per litre. And with this, the price of petrol has been increased by Rs 9.61 in 15 days. In addition, the price of diesel has increased by 80 paise per litre.