When was the Kings chamber in the Pyramid of Giza sealed?

The King's Chamber in the Great Pyramid of Giza is believed to have been sealed shortly after the pyramid's construction, which is estimated to have occurred around 2580–2560 BC during the reign of Pharaoh Khufu. The sealing was likely completed once the burial process was finished, and the chamber was intended to remain undisturbed. Some theories suggest it was sealed by large granite blocks placed in the passageways to prevent access.