Indira Gandhi International Airport (IGIA) in Delhi, India, has stepped up its security following a 'non-specific call' to its control room about an impending bomb blast at the airport.
The call was made at the control room of private airport operator Delhi International Airport Limited (DIAL) at around 7pm.
The airport's bomb threat assessment committee was immediately called in to take action.
The call has been termed as 'non-specific' as no specific details were provided by the caller.
Delhi's IGIA is already under tight security following a deadly terror attack at Pathankot Air Force Base this week that killed seven soldiers and wounded another 22.
IGI Airport DCP D K Gupta was quoted by The Indian Express as saying: "This was not a hoax call. Such calls are technically called non-specific calls and this particular one originated from an international number. It is also suspected to be executed through the Internet."
Gupta added: "The caller, whom we are trying to trace for details, called up and said that a man who is heading for Germany from IGI will do something big in Delhi before he leaves. He did not disclose any further details."
The security in Delhi has also been strengthened keeping Republic Day celebrations in mind.
Security has also been tightened at other airports, railway stations and bus terminals in the country.
Image: IGI tightens its security after a threat call. Photo: courtesy of Krokodyl via Wikipedia.