People 'unaccounted for' after NZ volcano erupts

People 'unaccounted for' after NZ volcano erupts
Smoke above White IslandImage copyright Reuters
Image caption Despite being an active volcano, White Island is a tourist destination

A volcano has erupted in New Zealand with about 50 people in the vicinity - leaving "a number of them" unaccounted for, police said.

Tourists were seen walking inside the rim of the White Island crater just moments before the eruption.

Police said at least one of those evacuated from the island volcano has been critically injured.

White Island, or Whakaari, is off the coast of North Island - and is one of the country's most active volcanoes.

Despite that, the island is a tourist destination with frequent day tours and scenic flights available.

One visitor who was on a boat leaving the island filmed the eruption, showing a thick plume of ash and smoke above the mountain.

Another group of tourist can be seen waiting to be rescued from the island.