Gunnar Bentz

U.S. swimmer Gunnar Bentz paints Ryan Lochte as aggressor in Rio gas station incident

The 20-year-old's lengthy account paints Ryan Lochte as the aggressor in the situation that unfolded around 6 a.m. Sunday after the four swimmers stopped at a gas station to use the restroom following a party in Rio. While statements from Brazilian police have said the swimmers broke down a door at the gas station and urinated inside it, Bentz's story is a bit different. It reads in part:

US swimmers stopped at airport as robbery investigation continues

The Brazilian authorities stopped Gunnar Bentz and Jack Conger from boarding the flight at Rio de Janeiro airport, bound for the US, for questioning late on Wednesday.

Two teammates - Ryan Lochte and James Feigen - were barred from leaving the country, but Lochte had already left.

Police have queried their accounts of a robbery they reported in Rio on Sunday.

The four swimmers said they had been robbed at gunpoint in a taxi in Rio.

But police said their account of when they arrived at the Olympic Village did not square with CCTV recordings.

US swimmer Ryan Lochte and three others robbed

Lochte, Gunnar Bentz, Jack Conger and Jimmy Feigen were stopped by people posing as armed police, the US Olympic Committee (USOC) said in a statement.

The robbers demanded money and other personal belongings.

After reports emerged of the incident, the USOC initially denied that Lochte had been robbed.

"All four athletes are safe and co-operating with authorities," the USOC's statement said.

The group had been attending a party at the French Olympic team's hospitality house when their taxi was stopped on the way back to the athletes' village.