The Boeing 787 was diverted into London Stansted Airport just before 3.45pm, but was later cleared, KQ said in a statement.
The security agencies cleared the aircraft and will be departing for London Heathrow to resume normal operations.
It had been due to land at Heathrow Airport from Kenya’s capital, Nairobi.
KQ headquarters in Nairobi said in a statement that it had received an alert of a potential security threat on board KQ100 operating from Nairobi to London Heathrow.
“KQ management in conjunction with the security authorities of Kenya and the UK carried out a thorough risk assessment of the threat. The crew onboard were briefed and all safety and security precautions were taken to ensure the safety and security of our crew and passengers on board,” KQ said in a statement to the media.
It said the aircraft landed safely at Stansted airport for security clearance by the UK government security personnel.
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