The aerial camera, encased in a heavy black cover, belonged to the official Olympics broadcast unit
An overhead television camera suspended by cables crashed to the ground in the Olympic Park on Monday, injuring seven people including two children, in the latest of a string of mishaps to hit South America's first Games.
No one was badly hurt in the accident, which comes as another embarrassment for organisers already facing safety concerns after the armed robbery of US gold medallist swimmer Ryan Lochte and three of his team mates at the weekend as well as the robberies of two visiting government ministers.
The aerial camera, encased in a heavy black cover, belonged to the official Olympics broadcast unit and fell about 20 metres (65 ft) after cables snapped, sending screams through the crowd, witnesses and officials said.
"I was looking to the camera ... and suddenly I heard a big snap on the cable and the camera came down," said visitor Chris Adams, a member of the British gymnastics delegation.
A Brazilian television news report showed two women looking dazed, sitting on the ground near the camera. One woman, bleeding from the face as medics arrived, was taken away on a stretcher. The other walked from the scene wearing a neck brace.
A total of four people were taken to hospital after the incident, including two children who had been hit by a cable, a Rio Games official said. All were expected to be discharged from hospital later on Monday, the official said.
One of the camera's cables had already broken before it fell and a walkway directly beneath had been cordoned off while the Olympic Broadcasting Services (OBS) unit arranged for a cherry-picker to go to the scene and hoist someone up to it, OBS said.
But the camera came down at an angle, falling outside the cordon, said Adams, the British visitor, who was taking pictures of the park at the time.
"There was a lot of medical people and Rio staff around. They were very, very quick, they were excellent."