India, June 16 -- A Lufthansa flight bound for Hyderabad was forced to make a U-turn and return to Frankfurt Airport in Germany after it failed to receive landing clearance, following a bomb threat.

Flight LH752 had departed from Frankfurt and was scheduled to arrive at Hyderabad's Rajiv Gandhi International Airport early Monday.

However, the aircraft turned back mid-route. "We did not receive a permit to land in Hyderabad, and that's why the aircraft took a U-turn and returned," news agency ANI quoted Lufthansa Airlines as saying.

The agency also quoted a senior official at Hyderabad airport who confirmed the aircraft's return, stating that the bomb threat was received while the plane was still outside Indian airspace.

As a result, t...