The Haryana government announced on Thursday that the it has decided to ban diesel vehicles that are over 10 years old and petrol vehicles over 15 years old in the areas of National Capital Region (NCR) falling in the state. Haryana Transport Minister Krishan Lal Panwar told media here that it has been decided to strictly implement the recent orders of the National Green Tribunal (NGT), which had banned old vehicles from plying in national capital New Delhi. Panwar said that instructions to this effect have been issued to officers concerned. Haryana surrounds Delhi from three sides with Gurgaon, Faridabad, Rohtak, Jhajjar and Sonipat districts adjoining the national capital. Other districts of Haryana which are included in the NCR are Panipat, Karnal and Jind. Dubbing diesel as a "major cause of pollution", the NGT on Monday ordered that all diesel vehicles that are 10 years old or more be banned from plying in the national capital with immediate effect.