>> Security around the Olympic venue stepped up after a media bus' windows were shattered Tuesday evening. Despite initial witness reports, the Games' security chief insisting it was not gunfire that caused the damage.>> In the first place, it was a rock. We're talking about a densely populated urban area, it would be impossible to make a secure perimeter for everybody.
>> But some witnesses telling Reuters that they heard gunfire. Journalist Sheryl Lee Michaelson was on the bus.>> I don't want to accuse anybody of a coverup. I will say that I will not believe that this was stone throwing unless I see a forensic and a ballistics report.
Looking not at the steel surround of the thing but the glass which was the point of impact in not one, but two places, from a competent forensic authority and one that has no reason to put any good spin on it.>> A photo by Reuters shows a small hole in the glass before it fell to pieces, although there's no evidence it was made by a bullet.
Two people were slightly scratched up from the glass. While Brazil had security issues during the 2014 World Cup, those who were here before say things are much worse now. Reuters Brazil Bureau Chief Dan Flynn.>> Brazil is in the midst of a deep recession. During the World Cup in 2014, the economy was doing well.
Now in 2016, the economy is doing extremely badly, there's a lot of unemployment. So the conditions for ordinary Brazilians are much worse now and that is increasing crime levels. Already in Rio, we've seen the level of violent crime this year, go up 12% year on year.>> Over the weekend, a stray bullet missed journalists by a few feet at an equestrian media tent and inside the media center,there have been several reports of cameras and other gear going missing.
Security has been a major concern at the Rio Olympics as the city already struggles with high crime rates and violence and it's under a microscope now with thousands of journalists and visitors watching.