At least four people have died after a storm hit an open-air music in Belgium, media reports said today.

The DH daily said the storm struck the Pukkelpop festival in the north-east of the country.

Video from the site near the town of Hasselt showed stage equipment dangling in high winds as rain-soaked concertgoers ran for cover.

The festival's website lists a number of stages where performances were to be held during the three-day event, which started today.

Reports said some 60,000 people were attending the event.

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