The chief of staff to Brazil's president said Thursday the U.S. Olympic swimmers who lied about being robbed at gunpoint while in Rio de Janeiro should be held accountable for lying to police officers, according to Reuters.

Rio's civil police chief, Fernando Veloso, confirmed earlier Thursday that gold medalists Ryan Lochte and Jimmy Feigen, as well as Gunnar Bentz and Jack Conger, lied about what happened overnight Saturday. Lochte and Feigen were indicted for their misrepresentation of events.

The report comes two days after Brazil police said they were unable to verify claims that the U.S. athletes were robbed by fake police.

"This happened the way he described it," Lochte's attorney, Jeff Ostrow, told the Associated Press previously. "It doesn't behoove Ryan and anyone else to make up a story."

The swimmers left a party at the French Olympic team's hospitality house overnight Saturday. The four men had taken a taxi home, but had said they were mugged by a group of fake police officers at an unofficial checkpoint.

"We got pulled over, in the taxi, and these guys came out with a badge, a police badge, no lights, no nothing just a police badge and they pulled us over," Lochte said on NBC's "Today Show" on Sunday. "They pulled out their guns, they told the other swimmers to get down on the ground — they got down on the ground. I refused, I was like we didn't do anything wrong, so — I'm not getting down on the ground.

"And then the guy pulled out his gun, he cocked it, put it to my forehead and he said, 'Get down,' and I put my hands up, I was like 'whatever.' He took our money, he took my wallet — he left my cellphone, he left my credentials," Lochte added.

The group has been on the defensive since the attack for not immediately reporting the incident to police. Lochte and another unnamed swimmer told police they had been intoxicated at the time of the event and could not pinpoint details of the incident, including the color of the cab or the specific address of the run-in.

By Thursday, the public learned Lochte and the three swimmers made a stop at a gas station and vandalized a restroom. After gas station attendants realized they had damaged the restroom, security guards stopped them from driving away, and the swimmers gave them cash. Surveillance video at the gas station shows the incident.