The International Olympic Committee is getting nervous about the samba-style pace of preparations for the 2016 Games in Rio de Janeiro, given the massive amount of construction still to be done while the country is also getting ready to host the 2014 soccer World Cup.

“Our message remains: there is time but time is ticking and they need to carry on attacking this one with all vigor,” spokesman Mark Adams said after the organizers recently briefed the IOC’s executive board.