A secret chamber in Tutankhamun's tomb?

Not about the Great Pyramid, but in view of the news it's not worth starting a new thread for it ...

"Egyptian authorities have finished their quest to discover a secret chamber in the tomb of Tutankhamun - concluding that it does not exist.
Previously, officials said they were "90% sure" of a hidden room behind the wall of the boy king's famous 3,000-year-old tomb."
http://www.bbc.co.uk/news/world-middle-east-44026087

Pretty fertile ground for a conspiracy theory, though. 

Courtesy of Mysterious Universe - it seems this question has still not been finally settled, as explained in this article in Nature:
https://www.nature.com/articles/d41586-020-00465-y

Apparently a team from the UK was asked to survey the tomb, as well as the Italian team that came up with negative results two years ago. But the British team "was asked by the SCA [Supreme Council of Antiquities] to cut short its survey," despite initial positive indications.

Now a team led by Mamdouh Eldamaty, a former Egyptian Minister of Antiquities, has found a "corridor-like space" close to the tomb, but in a different place from the one previously suggested, using ground-penetrating radar. Egyptologists are excited about this. Nicholas Reeves, who suggested previously that there was a hidden tomb of Nefertiti nearby, still believes that. Others suggest this might be the tomb of Tutankhamun's wife, Ankhesenamun. The one unchanging certainty in the saga is that Zahi Hawass doesn't believe a word of it.