Workers at a World Cup stadium in the Brazilian city of Manaus are threatening to go on strike after a third worker died during the construction of the venue.
A 55-year-old Portuguese worker was killed on Friday while disassembling a crane.
He is now the third person to die at the venue in less than a year.
Construction of the stadium, which is due to host England's opening game against Italy, is already behind schedule.
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The boy was found unconscious and in cardiac arrest and was rushed to hospital where he died.