Most likely the burial of Tutankhamun was in spring between middle of march and the end of april.
This approach is made, due to the collars, bouquets, festoons and the flowerdecorations of the attendees of the funeral feast found within the tomb. All of them persisted of fresh flowerpedals and fruits. If the ancient traditional 70-day-period, between death and burial, has been met, the approximate death of king Tutankhamun was around January or the beginning of February.
The cause of his death is unknown, yet newest approaches, in research of the kings mummy, state that the cause may have been a fatal encounter of congenital abnormality, an accident and malaria. While the media and scientists approve these new speculations, the objections of the specialists for genetic and radiology completely been put in the shadows.
Also unknown is where Tutankhamun has died. Wherever it has been, the order to prepare his burial must have been sent to Thebes. In Memphis, where the king has lived, servants gathered the personal belongings of the king- furniture and clothings, jewelery and similar, his chariot, hunting equiptment etc.- and got them ready for transportation southbound so the king could take them on his last journey. Whatever was at hand, was filled with the belongings of Tutankhamun, elaborate decorated crates with insoles and hieroglyphic texts or just basic whitewashed boxes. All of the chests, creates and boxes found within the tomb, where exclusive furniture of the palace with one exeption. The gabled chest with handlebars was customly made for his funeral.