URUMQI - A commercial flight that left Xinjiang for Guangdong on Wednesday evening made an emergency landing in a neighboring province following a bomb threat that turned out to be a hoax, civil aviation authorities said on Thursday.

Police in Guangzhou, capital of South China's Guangdong province, received an anonymous phone call "some time after 7 pm", claiming there was a bomb on board China Southern flight CZ3912, which took off from Urumqi, capital of Northwest China's Xinjiang Uygur autonomous region, at 7:30 pm for Guangzhou, said a notice on the website of Civil Aviation Administration of China (CAAC).

The plane, a Boeing 777-200, made an unscheduled landing at 9:53 pm at an airport in Lanzhou, capital of Gansu province that neighbors Xinjiang.