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