Seif al-Islam Kadhafi, son of former Libyan President Moamer Kadhafi, registered Sunday to run in the country's December presidential polls, the electoral commission said.

"Seif al-Islam Kadhafi submitted... his candidacy for the presidential election to the High National Electoral Commission office in the (southern) city of Sebha," a statement by the commission said.

It said he had completed "all the required legal conditions" and that he was also issued with a voter registration card for the Sebha district.

Libya's first ever direct presidential poll, with a first round on Dec. 24, is the climax of a process launched last year by the United Nations to draw a line under years of violence since the revolt that toppled Moamer Kadhafi in 2011.

Libya opened registration for candidates on Monday.

In July, Seif al-Islam, 49, emerged from years in the shadows and told The New York Times he was planning a political comeback.

In a rare interview, he said he wanted to "restore the lost unity" of Libya after a decade of chaos and did not exclude standing for the presidency.