Rio Olympic preparation worst ever, says IOC
30 April 2014 Last updated at 02:33 BST
The vice president of the International Olympic Committee has described Brazil's preparations for the 2016 Games in Rio de Janeiro as the worst he has ever seen.
John Coates said that "we just have to make it happen" despite the concerns.
Millions of dollars have been spent on infrastructure and construction in the city.
Katy Watson reports.