The eruption of the White Island volcano, leaving at least five people dead and many unaccounted for, has dominated international headlines.
Nine News has reported that 24 Australians are understood to have been on White Island when the volcano erupted this afternoon.
US Ambassador Scott Brown said his heart goes out to the victims and their families involved in the disaster.
"Gail and I are so very sorry to hear the devastating news from Whakaari / White Island. Our hearts go out to the victims & their families," he wrote on Facebook.