Kikhia will be buried in his native city of Benghazi, cradle of the revolt that ousted last year now slain dictator Moamer Qadhafi, said the dissident's brother Mahmud al-Kikhia.
Kikhia was "abducted in Cairo in 1993 by the former regime," and his body was discovered in mid-October in a morgue inside a Tripoli villa that once served as a headquarters for Qadhafi 's infamous intelligence services, he said.
Mahmud added that DNA analysis of Kikhia's body matched those of his brothers and sons, and that ex- Qadhafi intelligence chief Abdullah al-Senussi, who is currently imprisoned by the country's new authorities, acknowledged the dissident's abduction and indicated the location of the body.
On the eve of his burial, Libya's top brass attended a funeral ceremony to pay tribute to Kikhia. National assembly head Mohammed Megaryef and Prime Minister Ali Zeidan, a comrade-in-arms of Kikhia during years of exile and opposition to Qadhafi, attended the ceremony alongside other officials and diplomats posted in Tripoli.
Megaryef and Zeidan hailed Kikhia as a "martyr for liberty" and spoke of his accomplishments during years of activism against Qadhafi 's regime.
"The values and principles of justice for which strove are now being implemented thanks to the February 17 (2011) revolution," that ousted Qadhafi, said Megaryef.
Zeidan recalled that Kikhia had founded the Libyan human rights league and was abducted in Cairo in 1993 during a meeting of the watchdog.
Earlier the foreign ministry issued a statement saying: "The tyrannical regime (of Qadhafi) abducted the dissident Mansour Rashid al-Kikhia, killed him, hid his body and did not bury it, proving that it was more afraid of him dead than alive." Speakers at the ceremony also urged officials to bring to justice those responsible for Kikhia's abduction, both in Libya and in Egypt.
Libyan authorities announced the discovery of the body last week.
Kikhia was a former foreign minister under Qadhafi and previously an ambassador posted to Paris, Algeria and the United Nations but in 1980 he joined opposition ranks against the former dictator.