Police have used tear gas and smoke grenades on football fans who rioted over tickets to the first match at one of Brazil’s World Cup venues.
Many supporters had queued overnight at a ticket office in the north-eastern state of Bahia, but fighting broke out as soon as it opened.
The ugly clashes took place at the Arena Fonte Nova stadium in Salvador, which cost around £217m to build – some £33m over budget.
Witnesses said there were no barriers to separate ticket queues at the ground, which added to the atmosphere of chaos and tension.
The violence was another setback for Brazil’s World Cup and Olympic organisers, who were recently forced to shut the showpiece Joao Havelange stadium in Rio De Janeiro for safety reasons.
Police said no arrests were made after the latest disorder and the stadium owner vowed to sort out problems that became clear during the disturbances.
The inauguration date of the iconic Maracana in Rio, set to host the final next year, has been delayed repeatedly.
Originally due to have reopened in December 2012, its first match is now scheduled for 27 April.