the precise king and regnal date of this tomb are unknown; style places it in the latter 5th dynasty under nyuserre or menkauhor. no human remains were discovered inside. it is believed the tomb was built in stages, first a sequence of two chambers cut into the limestone of a low escarpment in the northern area of saqqara, then a surface-built mastaba structure added to mate with the earlier construction. this would have occurred as the two intended occupants gained resources.