The official says the delegation that arrived on Thursday brought a new list of 88 names.
The visit comes two days after Egyptian authorities arrested Ahmed Qaddaf al-Dam, a former top aide to Gadhafi, at his home in Cairo. He was arrested along with two others wanted for their roles during the eight-month civil war in Libya that ended with ouster and killing of Gadhafi.
The official spoke on condition of anonymity because he was not authorized to disclose the information to the media.
Last year, Libya asked Egypt to hand over nearly 40 former members of the Gadhafi regime.