India, July 19 -- The police on Thursday booked an unidentified person for making hoax bomb threat calls concerning the Chhatrapati Shivaji Maharaj International Airport (CSMIA) and a Mumbai-Ahmedabad flight.

According to the police, the accused made the first set of calls to the office of Navi Mumbai police commissioner Milind Bharambe on Wednesday, claiming a bomb was planted in a Mumbai-Ahmedabad flight. The accused also made multiple calls to the office of joint commissioner Sanjay Yenpure, warning of a blast at CSMIA at 6.30 am on Thursday, said a police officer.

"Airport authorities and all concerned security agencies were alerted, and precautionary measures were put in place," said the officer. After no explosives were found, the...