The Devi Ahilyabai Holkar Airport in Indore city of Madhya Pradesh on Friday received a hoax bomb threat after which the case has been registered against unidentified persons in this connection, officials said. Additional Deputy Commissioner of Police (ADCP) Alok Kumar Sharma said that an unidentified person sent an email that threatened a bomb blast on its premises.

"Airport Authorities received an email that some people are going to plant a bomb at the airport. Airport authorities made all the security arrangements and a drill was also carried out. Local police and the CISF were also involved in the drill," ADCP Sharma said. He further said that following the investigation by the police and the Central Industrial Security Force (CISF), the threat turned out to be a hoax.