Updated

The Latest on Indonesia's election (all times local):

6 p.m.

Indonesian President Joko Widodo says he's the winner of the country's presidential election with preliminary results showing he received 54% of the vote.

He told reporters about 20 leaders of nations from Southeast Asia and other regions have congratulated him on securing a second term.

The vote estimate is based on so-called quick counts of a sample of polling stations by reputable survey organizations. He said that 100% of sample polling stations have now been counted or close to that. The quick counts have been accurate in previous elections.

Widodo's rival, former Gen. Prabowo Subianto, has claimed he won 62% of the vote in Wednesday's election based on his campaign's own counts, repeating a similar claim when he lost to Widodo in 2014.

The Election Commission is required to release official results by May 22.

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2 p.m.

Indonesia's top security minister and its military and police chiefs said Thursday that they will crack down decisively on any attempts to disrupt public order while official results from presidential and legislative elections are tabulated.

Preliminary results from Wednesday's election show President Joko Widodo has comfortably won a second term, but his challenger, ultra-nationalist former general Prabowo Subianto, has claimed victory, repeating his tactics following his 2014 loss to Widodo.

Security minister Wiranto, who uses a single name, told a news conference with the chiefs of police and all military branches that security forces will "act decisively" against any threats to order and security.

He said the voter turnout of 80.5% gives the winner of the presidential election "high legitimacy." The Election Commission is required to release official results by May 22.