"Then it would've been impossible to finish the stadium before the World Cup, which would have been even more disastrous."

The stadium is set to host the opening game of the tournament on June 12 and Spangenberg remains confident that will still be the case, despite the setback.

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"We are expecting a maximum delay of two months,” he continued. “We think it will be done by late February. "Everyone on site is saying we'll be able to do it. There's a six-month time buffer that Fifa asked for from the beginning of the tournament and we'll probably eat into two months of it."

The accident is believed to have occurred because the crane could not withstand the pressure and weight of the final piece of the roof which was being levered into position, though a definitive report has not yet been made.

Brazilian giants Corinthians will move into the stadium after the World Cup next summer.