JOHANNESBURG (AP) — The Latest on South Africa's leadership transition (all times local):

5:30 p.m.

Cyril Ramaphosa has taken the oath of office as South Africa's president after his election in parliament.

Chief Justice Mogoeng Mogoeng presided over the swearing-in ceremony on Thursday at the presidential office in Cape Town. Mogoeng congratulated Ramaphosa and shook his hand as onlookers applauded.

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Ramaphosa replaced Jacob Zuma, who resigned late Wednesday after the ruling party instructed him to leave office following years of corruption scandals.

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5 p.m.

South African authorities say they are seeking to arrest a key member of a business family accused of using its links to former president Jacob Zuma to secure state contracts.

Police tell local media that they consider Ajay Gupta to be a fugitive after he failed to turn himself in following contact between his lawyers and authorities.

Police say they have arrested eight people as part of an investigation into alleged corruption involving the Gupta family, which denies any wrongdoing. Ajay Gupta is among several people sought by authorities as part of the probe.

Zuma resigned as president late Wednesday following years of corruption scandals. His successor, Cyril Ramaphosa, has vowed to fight graft.

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3:30 p.m.

South Africa's new president-elect, Cyril Ramaphosa, says fighting corruption and mismanagement in state-owned enterprises will be a priority of his administration.

Ramaphosa, who was elected by ruling party legislators on Thursday, said the issue of corruption is "on our radar screen."

Ramaphosa, who is to be sworn in by South Africa's chief justice, also says one of the first things he wants to do is have a meeting with the leaders of other political parties "so we can try and find a way of working together."

He says he will outline his policies in a state of the nation address on Friday evening.

Ramaphosa replaced former leader Jacob Zuma, who resigned late Wednesday following years of corruption scandals that hurt the ruling party.

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2:40 p.m.

Cyril Ramaphosa has been elected as South Africa's new president by ruling party legislators after the resignation of Jacob Zuma.

Ramaphosa was the only candidate nominated for election in the parliament on Thursday after opposition parties said they would not participate. The opposition instead unsuccessfully called for the dissolution of the National Assembly and early elections.

Chief Justice Mogoeng Mogoeng presided over the parliamentary election and congratulated Ramaphosa, who had been Zuma's deputy and has called for a fight against corruption.

Zuma resigned after years of scandals that damaged the stature of the ruling African National Congress party.

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2:25 p.m.

Members of a South African opposition party have walked out of parliament, saying a ruling ANC party plan to elect a new president is "illegitimate."

Julius Malema, leader of the Economic Freedom Fighters party, said Thursday that lawmakers from the African National Congress had failed to hold former leader Jacob Zuma to account for alleged corruption and had therefore violated the constitution.

Legislators from the ANC, which has a majority in parliament, are expected to elect acting President Cyril Ramaphosa as head of state following Zuma's resignation.

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2:15 p.m.

Ruling party lawmakers are meeting in the South African parliament to elect a new president after the resignation of Jacob Zuma, though opposition parties are objecting to the vote and instead want the National Assembly to be dissolved.

The ruling African National Congress party has a majority in the 400-member parliament and is expected to elect acting President Cyril Ramaphosa as head of state to serve out the remainder of Zuma's term until 2019 elections. Chief Justice Mogoeng Mogoeng would then swear in the new president, who will give a state of the nation address on Friday evening.

Ramaphosa has promised to fight corruption and authorities are stepping up investigations of alleged corruption by associates of Zuma. Opposition leaders, however, say the ruling party protected Zuma for years despite scandals and would be unable to effectively root out corruption within its own ranks.

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2:10 p.m.

South Africa's biggest opposition party says it won't participate in the parliamentary election of a new president.

The Democratic Alliance said Thursday that the parliament should be dissolved and new national elections should be held because the ruling party-dominated assembly failed to hold former leader Jacob Zuma to account for alleged corruption.

A smaller opposition party, the Economic Freedom Fighters, has made a similar statement.

The ruling African National Congress party has a majority in the parliament and is expected to elect acting President Cyril Ramaphosa as head of state. Lawmakers are currently gathering in the parliamentary chamber ahead of the vote.

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1 p.m.

South African authorities say eight people have been arrested in an investigation into alleged corruption involving a business family linked to former leader Jacob Zuma.

The police ministry says police are seeking another five suspects in a probe of a dairy project in which state funds earmarked for local farmers allegedly were siphoned off to a company tied to the Gupta family.

The ministry says several of the five wanted suspects are believed to be outside South Africa. Those who were detained appeared in court on Thursday.

Police raided the Gupta home in an affluent Johannesburg neighborhood early Wednesday. Zuma resigned as president late Wednesday following years of corruption scandals.

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12:45 p.m.

A South African opposition party says it won't participate in the parliamentary election of a new president on Thursday because it says the ruling party is corrupt.

Julius Malema, leader of the Economic Freedom Fighters, says parliament instead should be dissolved so that new lawmakers can be selected in early elections.

The parliament is dominated by the ruling African National Congress and is expected to select acting President Cyril Ramaphosa to succeed Jacob Zuma, who resigned as president late Wednesday.

Malema says the ANC protected Zuma during years of corruption scandals before turning against him and wouldn't act differently under an administration led by Ramaphosa, who has pledged to fight graft.

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11:35 a.m.

South Africa's ruling party says it will nominate acting President Cyril Ramaphosa to be elected as the country's new leader in a parliament vote Thursday afternoon.

Ramaphosa was elected the leader of the ruling African National Congress in December and had been poised to succeed former president Jacob Zuma, who resigned late Wednesday.

The ANC ordered Zuma to step down after the party was weakened by multiple corruption allegations around him. Zuma has denied wrongdoing.

The country's new president will be sworn in after the parliament vote and is then expected to address the chamber.

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11:15 a.m.

South Africa's parliament spokesman says the speaker has received Jacob Zuma's resignation letter and his departure as president is effective immediately.

Parliament is set to elect a new president Thursday afternoon. Until then, Deputy President Cyril Ramaphosa is acting president.

Zuma announced his resignation late Wednesday after the ruling African National Congress ordered him to step down. The ANC has been hurt by multiple corruption allegations around Zuma, who has denied wrongdoing.

The ANC now must try to rebuild its reputation ahead of next year's elections.

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10:50 a.m.

South Africa's government says acting President Cyril Ramaphosa is in charge until parliament elects a new leader Thursday afternoon following the resignation of Jacob Zuma.

The 400-member parliament, dominated by the ruling African National Congress party, is expected to select Ramaphosa to finish his predecessor's term, which ends with elections in 2019.

Zuma resigned late Wednesday after the ANC, which has lost popularity because of corruption scandals during his tenure, instructed him to leave. Ramaphosa has promised to fight graft.

The South African currency strengthened against the dollar in early trading Thursday after Zuma's resignation, which ended a leadership crisis that had stalled some government business.

The Nelson Mandela Foundation welcomes Zuma's departure but says the state must act against "networks of criminality" that have hurt South Africa's democracy.