The latest disaster to hit Brazil's preparations for the World Cup.<br/> <br />A construction worker was killed on Monday after part of a monorail collapsed.<br/> <br />The man was working on an extension to the metro network in Sao Paulo when he was hit by a concrete support beam.<br/> <br />Two others were injured in the accident.<br/> <br />The monorail was supposed to be up and running for the World Cup, which kicks off on Thursday.<br/> <br />But construction is behind schedule.<br/> <br />When completed, the line will connect the city's airport to three metro lines.<br/> <br />This is the latest in several deaths, as workers rush to complete preparations for the tournament.<br/> <br />Eight workers have now died in accidents during the construction of the 12 World Cup arenas in Brazil.