REUTERS - A China-bound Afghan passenger flight was sent back to Afghanistan because it lacked the proper documents required to land, not because of a bomb or hijack threat, Afghan officials said.
China’s Xinhua news agency had reported that Chinese authorities suspected the flight had been threatened by a bomb. But an air traffic official in Kabul and an airport police source in Kandahar said there was no such threat.
The plane, from Afghanistan’s Kam Air airline, had departed from Kabul but landed in the southern city of Kandahar on its return because of high winds in Kabul, they said.
“It can go back to Kabul whenever it wants,” the Kandahar airport police source said.
The sources said the flight was the first the airline had made on that route, and the airport in China’s Xinjiang province denied it permission to land.
A press officer for NATO-led and U.S. forces in Kabul, Chief Petty Officer Brian Naranjo, said a plane had made a “precautionary landing” in Kandahar, but that there was no hijacking or bomb threat involved.
China's Xinjiang region
A Kam Air plane from Afghanistan, traveling in China's Xinjiang region was not hijacked and did not receive a bomb threat, according to Afghan officials. 

Earlier the Chinese news agency Xinhua reported a plane to be hijacked. Later reports then stated the plane received a bomb threat and was diverted back to Afghanistan, landing in Kandahar. The early reports say the plane was diverted back to Afghanistan after being denied an emergency landing in Ürümqi.

The plane was traveling to China and had been ordered to turn around after the proper paperwork was not in place. Subsequently it was denied a landing in Ürümqi. Upon its return, the plane landed in Kabul after it encountered high winds. It is not known how many people were on board the plane, but no injuries are reported.

A NATO official denied there was an emergency landing  due to a threat and says the Chinese media reports are untrue.

"We are aware of the reports. We have no evidence that this is true. We would know immediately," said the unnamed official.

The Xinjiang region was the scene of a violent uprising by its Uyghur population last month.