A MIG-21 fighter aircraft of the Indian Air Force crashed on Tuesday in Bijbehara area of Anantnag district in Kashmir, killing the pilot. The MIG-21, which was on a routine exercise, crashed in the fields at Mirhama in Bijbehara area, 45 kms from here, defence sources said. Pilot Raghu Bansi was killed in the crash, they said. The MIG-21 had taken off from technical airport here this morning, the sources said. The cause of the crash was not immediately known. A team of IAF officials have rushed to the spot.