A bus carrying journalists at the Rio Games was hit by gunfire on a highway between Olympic venues on Tuesday (August 9), witnesses said. No one was seriously injured in the incident.

The bus was making its way from the Games basketball venue to the main Olympic park when, according to passengers, two shots were heard hitting the vehicle. Windows shattered and flying glass left two people with minor lacerations.

"We were on the highway going fast and we hear a loud noise and we just got shot at, two windows and we could see the bullet. I'm just in shock now but there's not much I can say," Kaan Korkmaz, an Olympic Volunteer from Turkey told Reuters TV after he exited the bus.

"I have zero motivation right now. I just want to go home and stay home," he said.

"I'm not a firearms expert, I just know what a gun sounds like and I would say from my experience that it was a small calibre handgun that was shot at the bus at an angle because the sound was not that of a heavy rifle. The sound was smaller," said Sherryl "Lee" Michaelson, a retired U.S. air force captain who is working for a basketball publication in Rio.

Brazilian police were not immediately available for comment.

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 a few feet. That bullet was suspected to have been fired by a gang member trying to shoot down a police blimp or drone, officials said.