The rate of aviation turbine fuel (ATF) has been raised by a steep 9.2 per cent after petrol price was hiked by Rs 2.58 per litre and diesel price was raised by Rs 2.26 per litre. ATF price in Delhi has increased by Rs 3,945.47 per kilolitre to Rs 46,729.48 per kilolitre. ATF prices in Kolkata increased from Rs 47561.18 to Rs 51492.43. In Mumbai, fuel prices increased from Rs 41,756.16 to Rs 45,700.55 and in Chennai jet fuel prices hiked to Rs 49404.76 from Rs 45,346.82. The hike is the fourth one this year with the last one on May 1 that saw a 1.5 per cent increase. On April 1, there was a steep 8.7 per cent hike and prior to that, rates were hiked by 12 per cent on March 1.