Brazilian President Luiz Inácio Lula da Silva and Senator Flávio Bolsonaro faced off Sunday in their first debate before the October 25 presidential runoff, The Associated Press and G1 reported. The debate aired on Band TV, The Associated Press and G1 reported.

Lula and Bolsonaro traded accusations, including over investigations involving their allies and family members, The Associated Press and G1 reported. Lula proposed that both of them open their financial records, The Associated Press and G1 reported. The Associated Press called that the most tense moment of the debate.

On security, Bolsonaro promised to declare "war on narcoterrorism" (translated from Portuguese), G1 reported. Lula backed a constitutional amendment on public security and joint work with the states, G1 reported. "For the worker and the community, protection. For the criminal, prison," Lula said (translated from Portuguese), according to G1.

Bolsonaro said Brazil's economy would improve just by removing Lula from office and fighting corruption, while Lula defended his record and welfare programs, The Associated Press reported. Bolsonaro called for spending cuts to reduce public debt, G1 reported.

Bolsonaro, the son of former President Jair Bolsonaro, finished ahead of Lula in the first round of voting, The Associated Press and G1 reported. Recent polls show a very close race, The Associated Press reported, and G1 described the race as a statistical tie. Bolsonaro is an ally of US President Donald Trump, The Associated Press reported.

Also on Sunday, Brazil's federal police asked the Supreme Court to open an investigation into Bolsonaro over a money laundering accusation involving a lawyer close to him, The Associated Press reported. He is already under investigation over his links to former banker Daniel Vorcaro, who financed a movie about Jair Bolsonaro, The Associated Press and G1 reported. Bolsonaro denies wrongdoing, The Associated Press and G1 reported.

Another debate is scheduled for Friday on TV Globo, The Associated Press reported.

What we know: Lula and Bolsonaro clashed in their first runoff debate a week before the vote.
What we don't: Whether the debate moved any undecided voters.