Mystery of glowing white ball in Shanghai sky

A huge glowing UFO hovering high above Shanghai at around 9pm on Saturday was spotted by several civil aviation pilots who reported the sightings to the East China Air Traffic Control Bureau.

A bureau official surnamed Jiang confirmed yesterday that they had received reports from several pilots. No flights were affected but he refused to disclose more details.

The unidentified flying object was 10,700 meters above Shanghai, and it grew bigger and bigger as time passed, a man who claimed he was a pilot on "Flight 6554" wrote on his microblog.

"The huge white ball suddenly appears in the sky when the airplane climbed out of thick clouds," he wrote. "It was several hundred times bigger than the moon, and human eyes can observe."