The start of the annual San Fermin bull-running festival was delayed briefly after suspected Basque nationalists obstructed the view in a historic city plaza in Pamplona before dignitaries could set off a firework marking the beginning of reveries.

Tens of thousands of cheering, champagne-soaked revellers packed the central streets and plaza of Pamplona today to kick off Spain’s most famous fiesta, the San Fermin bull-running festival.