Scans of King Tutankhamun's tomb in Egypt's Valley of the Kings point to a secret chamber, archaeologists said Saturday, possibly heralding the discovery of Queen Nefertiti's long-sought mummy.
Using hi-tech infrared and radar technology, researchers are trying to unravel the mystery over the legendary monarch's resting place.
A wife of Tutankhamun's father Akhenaten, Nefertiti played a major political and religious role in the 14th century BC, and the discovery of her tomb would be a major prize for Egyptologists.
Experts are now "approximately 90 percent" sure there is a hidden chamber in Tutankhamun's tomb, Antiquities Minister Mamduh al-Damati told a news conference.
The scans were spurred by a study by renowned British archaeologist Nicholas Reeves that said Nefertiti's lost tomb may be hidden in an adjoining chamber.
Speaking at the same press conference, Reeves said the initial results could bear out his theory.
"Clearly it does look from the radar evidence as if the tomb continues, as I have predicted," he said.
Tourists visit the Valley of the Kings.
"The radar, behind the north wall (of Tutankhamun's burial chamber) seems pretty clear. If I am right it is a continuation -- corridor continuation -- of the tomb, which will end in another burial chamber," he said.
"It does look indeed as if the tomb of Tutankhamun is a corridor tomb... and it continues beyond the decorated burial chamber," he added.
"I think it is Nefertiti and all the evidence points in that direction."
Cult of sun god
Damati emphasised that the findings were "preliminary" results, and a Japanese expert working with the archaeologists needed a month to analyse the scans.
Experts carried out a preliminary scan of the tomb earlier this month using infra-red thermography to map out the temperature of its walls.
Damati said at that time that the analysis showed "differences in the temperatures registered on different parts of the northern wall" of the tomb.
But the minister and Reeves had differed on whose mummy they expected to find.
The golden sarcophagus of King Tutankhamun in his burial chamber at the Valley of the Kings.
According to Reeves, professor of archaeology at the University of Arizona, Tutankhamun, who died unexpectedly, was buried hurriedly in an underground chamber probably not intended for him.
The boy king died aged 19 in 1324 BC after just nine years on the throne. His final resting place was discovered by another British Egyptologist, Howard Carter, in 1922.
Reeves's theory is that priests would have been forced to reopen Nefertiti's tomb 10 years after her death because the young pharaoh's own mausoleum had not yet been built.
But Damati believes that such a chamber, if found adjoining Tutankhamun's tomb, may contain Kiya, another of Akhenaten's wives.
Akhenaten is known for having temporarily converted ancient Egypt to monotheism by imposing the cult of sun god Aton.
Nefertiti's role in the cult would have ruled out her burial in the Valley of the Kings according to Zahi Hawass, the country's former antiquities minister and expert on ancient Egypt.
"Nefertiti will never be buried in the Valley of the Kings," he told AFP.
The golden sarcophagus of King Tutankhamun in his burial chamber is seen in the Valley of the Kings, in Luxor, Egypt, November 28, 2015. Chances are high that the tomb of Ancient Egypt's boy-king Tutankhamun has passages to a hidden chamber, which may be the last resting place of Queen Nefertiti, and new evidence from the site will go to Japan for analysis, experts said on Saturday.
"The lady was worshipping Aton with Akhenaten for years. The priests would never allow her to be buried in the Valley of the Kings," he said.
Hawass also questioned how archaeologists would enter the hidden part of the tomb without causing damage.
Damati said that after the analysis, that would be the next challenge.
"The data is being analysed to get a clear picture of what's behind the wall," he said.
"The next step, which we will announce once we agree on it, will be accessing what's behind the wall without damaging the tomb," he said.