Two people die as a crane falls into the roof of a Sao Paulo stadium due to host the opening ceremony of Brazil's 2014 World Cup finals.
The accident at the Arena Corinthians, known locally as the Itaquerao, could hardly have come at a worse time - just a week before the draw to decide the tournament's schedule and with the top names in football all descending on Brazil.
Preparations have been plagued by setbacks including cost overruns, stadium delays, accidents, labour strife and huge street protests in the run-up to the June tournament.
The accident yesterday could lead to recriminations between local organisers and world football's ruling body FIFA, which has set a December deadline for all 12 World Cup stadiums to be ready. The tournament begins on June 12.
The club said workers will not return before a three-day mourning period.
The stadium was nearly finished before the collapse, which happened when a construction crane crashed into a 500-ton metal structure. That structure then cut through the outer walls of the venue, destroying part of the outside of the building and slamming into a giant LED panel that runs across the stadium's facade.
FIFA has said it would not accept the same delays that plagued stadium construction before football's Confederations Cup earlier this year, for which only two stadiums were ready on time.
Other problems have seen heavy rains flood the construction site at Rio's Maracana Stadium last March, forcing the cancellation of a FIFA inspection visit.