[5] The core of the pyramid was made with small rough blocks of local limestone with a loose fill of sand debris and mud brick.

These include the tombs of the high steward Nakht, the treasurer Rehuerdjersen and the vizier Intefiqer.

The investigations were continued from 1920 to 1934 by Albert Lythgoe and Arthur Mace in a team from the Metropolitan Museum in New York City.

By the time of these excavations the pyramid had undergone much disintegration and is now only 20 meters high with most of the surrounding complex gone.

[9] None of the expeditions successfully explored the interior of the pyramid due to the internal passageways being flooded with groundwater.