Pakistan International Airlines spokesman Mashood Tajwar said the airline had been unable to contact the pilot of flight PK709, despite repeated attempts.
Mr Tajwar said the control tower at Manchester Airport had received a call about a threat on board the plane and the advised the pilot to divert to its sister airport of Stansted.
More top news
The President's announcement on climate change is yet another attempt at securing an elusive climate change legacy.
Two cranes have collapsed during a bridge building operation onto housing in Holland, seriously injuring at least 20 people, reports say.
About 130,000 litres of fake vodka have been seized from an illegal booze factory, the tax office said.