The judicial decision suspending the England v Brazil game will be subject to appeal - legal decisions in Brazil are torturous, often challenged. The Brazilian Football Federation says all safety requirements have been met and this information will be sent to the judge showing the suspension is wrong.
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But senior officials at the Football Association have told BBC Sport they have received assurances from their Brazilian counterparts that the fixture will be played as scheduled.
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The Rio de Janeiro government has appealed against the court's decision.
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"All safety requirements for the friendly between Brazil and England have been complied with and, because of a bureaucratic failure, the appraisal from the public ministry that proves the compliance with the rules on safety at the Maracana have not been sent to Suderj," the Rio government said in a statement.
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Suderj is a division of the Rio de Janeiro state authority which is responsible for administrative issues associated with major sports venues.
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The judge who passed the court order, Justice Adriana Costa dos Santos, has made clear that the suspension can be lifted as late as Saturday providing the concerns are addressed.
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The iconic 78,000-seat Maracana reopened in April after nearly three years of work updating it for the 2014 World Cup finals.
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Even though the work was completed four months behind schedule, local newspapers still reported problems with the venue.