Seif al-Islam Qadhafi, the second son of Libya's late leader Muammar al-Qadhafi, will run for president in the country's December election.
Libya has been split into east and west sections since the Qadhafi dictatorship collapsed 10 years ago. Last year the warring sides reached a ceasefire agreement.
Presidential and parliamentary elections are scheduled for December 24 with the aim of uniting the North African nation. Registration for candidates opened last week.
Seif al-Islam Qadhafi appeared at the electoral commission in the southern city of Sebha on Sunday and submitted his candidacy. He was wearing a traditional brown robe and turban, the garb favored by his father.
Qadhafi was once seen as the heir apparent to his father. But he was sentenced to death in 2015 for cracking down on pro-democracy demonstrations and killing civilians.
He was pardoned two years later, but has rarely appeared in public. He is expected to draw support from people with ties to his father's regime.
Other figures expected to announce their presidential bids include eastern military commander Khalifa Haftar and interim Prime Minister Abdul Hamid Dbeibah.
Qadhafi's presidential run could further complicate the election as rival factions wrangle over the schedule and rules of election.