The stadium has reportedly not been tested by the tournament organisers at anywhere near full capacity.
Only last month, FIFA’s secretary general Jerome Valcke said: “It is vital that all facilities will be tested under full match conditions in the temporary sections and associated facilities.”
Workers are still scrambling to finish five of the 12 stadiums that will play host to matches.
Although temporary seats for 20,000 fans have now received safety clearance from firefighters, they have never been tested during a full game.
Meanwhile. union leaders are threatening to resume a metro strike in Sao Paulo during the tournament if their demands are not met.
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