LAHORE, Mar 22 (INP): The diesel and petrol prices for the month of April are likely to go up by Rs3-4 per litre. The prices will possibly increase as the rates of crude oil and dollar rose in the international market. From March till date, a $5 hike has been recorded in the price of crude oil. On other hand, rupee has depreciated by 5 percent against dollar in the ongoing month. INP/LK/AJ