The Police swung into action after nearly a dozen Indian flights, including some international flights, received bomb threats in the last two days. However, nothing suspicious was found in the planes and these threats turned out to be hoaxes.

The Delhi Police has registered an FIR in connection with bomb threats to several domestic and international flights in the last two days and launched a probe into the matter, official sources said on Wednesday.

In the last two days, nearly a dozen Indian flights, including some international flights, received bomb threats but nothing suspicious was found on the planes. Police said the number of FIRs may increase.