Twenty people were injured when a promotional stunt in Seoul for LG’s new G2 smartphone went wrong.

LG released 100 helium balloons, each with a free smartphone voucher, at the so-called G in the Cloud event, which took place in an outdoor park in the Korean capital city.

The phones, which sell for  $851/£550, would be given to people in possession of the voucher, the company said.

Customers arrived with BB guns to shoot down the balloons and surged forward when they were released.

One person carried a pointed staff to the event.The handset was released in New York last week, after weeks of build-up on social media.

It is expected to be available globally with more than 130 carriers within several weeks.

Source: BBC