China said the Sky Eye telescope possibly picked up signs of life beyond Earth, according to a report by the state-backed Science and Technology Daily.
The report and all posts about the discovery was later deleted.
Sky Eye – the world's largest radio telescope – detected narrow-band electromagnetic signals. These signals differ from previous ones captured and the team is further investigating them, the report said, citing Zhang Tonjie, chief scientist of an extraterrestrial civilisation search team co-founded by Beijing Normal University, the National Astronomical Observatory of the Chinese Academy of Sciences and the University of California, Berkeley.
"The suspicious signals could, however, also be some kind of radio interference and requires further investigation," Zhang added.
It isn't clear why the report was apparently removed from the website of the Science and Technology Daily, the official newspaper of China's science and technology ministry, though the news had already started trending on social network Weibo and was picked up by other media outlets, including state-run ones.
In September 2020, Sky Eye, which is located in China's southwestern Guizhou province and has a diameter of 500 meters, officially launched a search for extraterrestrial life. The team detected two sets of suspicious signals in 2020 while processing data collected in 2019, and found another suspicious signal in 2022 from observation data of exoplanet targets, Zhang said, according to the report.
"China's Sky Eye is extremely sensitive in the low-frequency radio band and plays a critical role in the search for alien civilizations," Zhang said.