A bush fire was threatening the Olympic Games mountain bike venue, officials said, as reports emerged that athletes had been evacuated from the area.
The flames, fanned by high winds, were closing in on the Deodoro complex in the west of the city.
Officials of the International Cycling Union (UCI) said an assessment of the situation would take place on Tuesday.
“The UCI is aware that there was a fire this afternoon in the vicinity of the Rio 2016 Mountain Bike course,” said a spokesman.
“It is understood the fire is now under control.
“Assessment of any potential impact on the Mountain Bike course will be made tomorrow (Tuesday).”
