SAO PAULO, Oct. 9 (Xinhua) -- Brazil's Olympic Committee president Carlos Nuzman says preparations for the 2016 Rio Games are on track despite concerns over delays to key infrastructure projects.

Nuzman told a Sao Paulo Industry Federation (Fiesp) conference on Tuesday that works in Rio were within the "specified time frame".

"We are on track, whether it be for infrastructure or sports facilities," Nuzman said.

During the event Fiesp announced the creation of a working committee to discuss business opportunities that can be of mutual benefit to local companies and Games organizers.

Despite Nuzman's assurances, Fiesp vice-president Jose Carlos de Oliveira Lima said he was concerned by the slow pace of preparations.

"The infrastructure works for 2016 are already behind schedule," Oliveira said. "The areas of hotels, transport and airports are worrying. The later we leave these works, the more costly they will become."