An IndiGo flight carrying 187 passengers and six crew members made an emergency landing at Raipur airport on Thursday morning after a bomb threat was received. The aircraft, which had taken off from Nagpur for Kolkata, was diverted to Raipur after airport authorities received the threat. The plane landed at the airport in Chhattisgarh capital Raipur after 9 am and was immediately taken to the isolation bay for mandatory security checks. The aircraft is being thoroughly checked by the technical staff and bomb squad.