WELLINGTON: The death toll from New Zealand鈥檚 White Island volcano eruption rose to 18 Sunday, including two people whose bodies have not been recovered, police said.
A land search early Sunday failed to find any sign of the missing pair and divers returned to the sea in the afternoon amid increasing speculation both could be in the water.
Deputy police commissioner Mike Clement said there was 鈥渆very chance鈥� the bodies had been washed into the sea from the stream where they were last seen Monday.
He added that searchers were 鈥渟atisfied that the area we searched near the jetty is clear of the bodies.鈥�
鈥淭he rescue teams are frustrated. We understand completely how frustrating it is for loved ones who want the bodies back,鈥� Clement said.
Forty-seven people were on the island 鈥� a popular tourist attraction 鈥� when the explosion happened.
The death toll now stands at 18 after an Australian victim who had been repatriated to Sydney died in hospital almost a week after the deadly eruption.
Another 26 survivors remain in New Zealand and Australian hospitals, of which 20 are listed as 鈥渃ritical鈥� and fighting for their lives after the eruption on the desolate island, which is the country鈥檚 most active volcano.
The family of the latest victim have requested his name and age not be released.
Police on Sunday named seven victims who have been officially identified including New Zealand tour guide Tipene James Te Rangi Ataahua Maangi, 24.
Four were Australians 鈥� Zoe Ella Hosking, 15, her stepfather Gavin Brian Dallow, 53, 51-year-old Anthony James Langford and Karla Michelle Mathews, 32 鈥� along with Matthew Robert Hollander, 13 and Berend Lawrence Hollander, 16, who were US citizens with Australian permanent residency.
Clement said although the land and sea searches had so far been unsuccessful in finding the remaining bodies, police had not given up hope.
鈥淭here will come a time when we鈥檝e done everything we can do, when we鈥檝e done everything that鈥檚 sensible but we鈥檙e not there yet... we don鈥檛 give up easily,鈥� he said.
Scientists monitoring White Island said there had been no further significant activity since last Monday鈥檚 eruption but the risk remained.
A glow was visible from the vent area overnight 鈥渨hich confirms there is a high heat flow present,鈥� said Geoff Kilgour, a volcanologist with GNS Science, which monitors seismic and volcanic activity in New Zealand.
鈥淭his has been confirmed today by an aerial observation this morning that noted an active crater is emitting volcanic gas at a high rate and very high temperature鈥� above 200 Celsius.
The disaster has raised questions about why tourists were allowed on a volcano where experts had recently raised threat levels.