Until 2009, the main hypotheses had been that he died either in a battle against the Hyksos or was killed while sleeping. A reconstruction of his death by Egyptologist Garry Shaw and archaeologist and weapons expert Robert Mason suggested a third, which they saw as the likeliest, that Seqenenre was executed by the Hyksos king. Garry Shaw also analysed the arguments for the competing hypotheses and other physical, textual and statistical evidence concluding "that the most likely cause of Seqenenre’s death is ceremonial execution at the hands of an enemy commander, following a Theban defeat on the battlefield."