The former chairman of the world's largest meatpacker, whose testimony implicated Brazil's president in corruption, turned himself in to police Sunday after the country's Supreme Court ordered his arrest.

Joesley Batista has avoided prosecution under a plea bargain deal in which he described how meatpacking giant JBS had bribed dozens of politicians, including President Michel Temer.

Batista had given authorities audio recordings of conversations he had with Temer, in which the president allegedly approved payments to former parliamentary speaker Eduardo Cunha, a witness in a corruption enquiry.

Earlier this year, Temer was charged with corruption for allegedly orchestrating a scheme in which he would get payouts totaling millions of dollars for helping JBS resolve a business issue.

Temer denies wrongdoing, and Congress voted in August that he would not stand trial on the charge while in office.

But Brazil's sprawling probe into the massive trade in bribes and kickbacks for favors between companies and politicians, known as Operation Car Wash, continues to churn out new allegations on almost a daily basis. Just this week the country's chief prosecutor, Rodrigo Janot, filed charges against three former presidents and several other powerful politicians, accusing them of forming criminal organizations to pilfer from public coffers, and authorities detained a former Cabinet minister and close ally of Temer after $16 million in cash was found in an apartment linked to him.

Janot also has said he plans to file more charges against Temer. To do so, he'll need to act in the coming days since his terms ends on Sept. 18.

But the specter that Batista and others withheld information could cast a pall over the Car Wash investigation, which has relied heavily on plea bargain deals, a fairly new innovation here. Many in Brazil are uneasy with the agreements, in general, and the deals JBS executives got provoked specific outrage from those who thought they were too lenient.

Janot said last week that he is investigating whether Batista and other cooperating witnesses omitted some information from their testimony and he has threatened to revoke the deals if they didn't tell the whole truth.

The revelation came after Janot's office received audio of a conversation between Batista and Ricardo Saud, an executive at J&F Investimentos, the holding company that controls JBS. The men apparently did not know they were being recorded, and Janot said it contained vague references to potentially illicit activity not previously disclosed, including the possibility of wrongdoing in his own office and at the Supreme Court.

He was careful to add that any information they have given — like the allegations against Temer — was still valid.

In his decision, Justice Edson Fachin said there was sufficient indication that Batista and Saud had withheld information from prosecutors when formalizing their plea bargains. Fachin ordered both men be detained. The decision was made Friday but was only made public by the court on Sunday.

Guilherme Barros of the public relations firm GBR that represents J&F said Batista and Saud have turned themselves in to Federal Police in the city. A statement e-mailed by GBR said that both Batista and Saud deny that they lied or omitted information in their deals and that they are fulfilling the terms of the agreement.

Last month, Temer survived a vote in parliament to have him suspended from office to face corruption charges.