The US Olympic Committee confirmed that Gunnar Bentz and Jack Conger were taken off an aircraft, headed to America, on Wednesday (August 17) for questioning by police as part of a robbery investigation.
The athletes, along with their teammates, Ryan Lochte and James Feigen, said they had been robbed at gunpoint in a taxi in Rio on Sunday morning.
Police have since queried their accounts of the incident – with Lochte and Feigen barred from leaving Brazil, although Lochte has since left the country, BBC News reports.
Authorities believe the swimmer’s account of the incident does not match up with CCTV recordings.
