The Times of London reported that the theory may help solve one of archeology's most perplexing mysteries.
Until this discovery, a common theory was that King Tut had been murdered by Aye, his closest adviser, who succeeded him on the throne. This theory was supported by X-rays from the 1960s showing a fractured skull.
The Times said a detailed examination of the mummy will be published this week, suggesting the young king died not of a blow to the head but of a badly infected break in the leg.
The examination suggests the skull fracture may have occurred when King Tut's grave was discovered 83 years ago.