( CNN ) -- Talk about eerie . One of two recent UFO sightings in China occurred almost on the 63rd anniversary of news that a `` flying disc '' had been found in Roswell , New Mexico . And like in 1947 , people either choose to believe or be skeptical that visitors have stopped by from outer space . Nothing has officially been ruled in or out by Chinese officials , who are looking into whether the objects were private or military aircraft , rocket flares , reflection in the sky or something else . The first sighting occurred at Hangzhou 's Xiaoshan Airport , in the eastern part of the country , according to the state-controlled Xinhua news agency . Eighteen flights were delayed or rerouted and operations shut down after twinkling lights were spotted above the terminal around 9 p.m. July 7 , the agency said . According to Xinhua , speculation has centered on a private aircraft . The state-run China Daily quoted a source saying the object had a military connection . `` No conclusion has yet been drawn , '' said Wang Jian , head of air traffic control with Zhejiang branch of the Civil Aviation Administration of China , and the investigation continues . Purported photos of the unworldly object have appeared online and on YouTube . Meanwhile , The Shanghai Daily reported a UFO appeared above the city of Chongqing on Thursday . Witnesses said four `` lantern-like objects forming a diamond shape '' hovered for an hour above a park . `` I stared at it and it did not move , '' one resident told the newspaper . `` After hovering for an hour , the thing started to fly higher and finally out of people 's sight . '' UFO sightings around the world are common , but a little rarer in China . The International UFO Museum and Research Center in Roswell , New Mexico , educates visitors , conducts research and receives sighting reports . Its website summarizes the Roswell incident , which came to light July 8 , 1947 . `` Once it became public , the event known as The Roswell Incident , the crash of an alleged flying saucer , the recovery of debris and bodies and the ensuing cover up by the military was of such magnitude and so shrouded in mystery , that 60 years later there are still more questions than answers . '' The U.S. government has long contended that no aliens or spaceships were found . Mark Briscoe , library director for the museum , said the center looks for credibility whenever it records UFO reports , including a documented date , time and location . He sees many photos , and an outside researcher provides information . `` You can tell some of them are a little different . A little off , '' Briscoe said of some UFO submissions . But he recently recorded 300 he found to be credible . He said one of the photos circulating about the Chinese airport could be legitimate , but he had not seen the others . The blog Forgetomori weighed in on Internet and news media images purporting to be from Xiaoshan Airport . `` All of these other photos , with the exception of a single one , are also simply long-exposure photos of aircrafts , but in this case , helicopters , '' the blog says . `` Not only that , they have nothing to do with China and were published on the web long ago . '' CNN 's Helena Hong and Journalist Annie Tai contributed to this article .
Two UFO sightings were recently reported in eastern China . One incident shut down operations at an airport . Museum in Roswell , New Mexico , gets reports of UFO sightings . Web site contends purported photos of one incident are not legitimate .