SAO PAULO (AP) ― Even before a crane dramatically collapsed and killed two workers at the Sao Paulo stadium, it was clear World Cup organizers would have their hands full trying to deliver all 12 venues by FIFA’s end-of-December deadline.

The giant crane buckled when hoisting a 500-ton metal structure that came crushing on top of the stadium, clipping part of the roof and cutting through a huge LED panel that runs across the venue’s outer facade.

The ravaged crane was seen resting on the ground outside the stadium, while the enormous metal roofing piece stayed atop part of the stands.

Clearly it wasn’t just a minor setback for the venue that will host the 2014 World Cup opener on June 12.

Wednesday’s accident immediately raised doubts about Brazil’s preparedness to host football’s showcase event. The timing could not have been worse, putting the country under even more pressure just days before the international soccer community begins arriving for a high-profile World Cup draw.

But as bad as the tragedy was at the Arena Corinthians, Sao Paulo is not the only problem for World Cup organizers just weeks before all stadiums must be delivered.

Actually, work in Sao Paulo was almost finished when the accident happened. It was one of the most advanced venues among the six that must be delivered this year.

The story is different in Curitiba, Cuiaba and the jungle city of Manaus, where there are signs they might not make it in time despite claims by local organizers that all three venues will be ready as expected.

FIFA says it will have a better idea of what will be delivered next week, just ahead of Friday’s World Cup draw in Costa do Sauipe.

“Next week the preliminary updates on the operations of the 2014 FIFA World Cup will be provided for all operational and infrastructural areas,” football’s governing body said. “Following these assessments and presentations FIFA will provide an update.”