White Island volcano in Bay of Plenty NE New Zealand erupted unexpectedly catching tourists unawares - one dead, 20-30 missing. Perhaps not quite unexpected as reports say that the tourist boats that go out there have to suspend operations from time to time.
It's an active area - I remember from when I visited NZ a few years back an afternoon at Hot Springs beach, where you can dig a hole in the sand and create you own personal sauna as it fills with water
Confirmed death toll now up to 5, with others still missing.
Reports saying that there were a number of people walking around inside the crater just 'moments' before the eruption.
Also heard that volcanic activity on the island is monitored, but nothing particularly suggested an eruption was imminent.