Shots have been fired at a media bus at the Rio Olympics, witnesses say.
Rio officials say they are aware of an incident and are seeking details from local authorities.
Media reports indicated the bus had two windows smashed while travelling on a highway linking the women's basketball venue in north-west Rio with Olympic Park at Barra.
No one was seriously injured in the incident, but passengers were shaken and flying glass left two people with minor lacerations.
"We were shot at. I mean we could hear the report of the gun," said Sherryl 'Lee' Michaelson, a retired US air force captain who is working for a basketball publication in Rio.
Brazilian police were not immediately available for comment.
A man sits on the bus after it was attacked (Reuters)
Violent street crime in Rio has left its mark on South America's first Olympic Games.
On Saturday, a bullet hit the equestrian centre, missing journalists there by just metres. That bullet was suspected to have been fired by a gang member trying to shoot down a police blimp or drone, officials said.