Questions on White Island eruption remain to be answered: New Zealand PM

A passenger walks past New Zealand's national flag flying at half-mast in front of the parliament buildings in Wellington, New Zealand, on Dec. 16, 2019. Questions need to be asked and answered with regard to the casualties caused by the White Island volcanic eruption, said New Zealand Prime Minister Jacinda Ardern on Monday. People across New Zealand observed a one-minute silence on Monday in honor of the victims of the White Island volcanic eruption. (Xinhua/Guo Lei)