Four people confirmed dead in Tonga tsunami disaster

Tonga says it has been hit by an “unprecedented disaster” since a volcanic eruption triggered a tsunami.

Rescue teams have been sent to some of the outlying islands, including one where all the houses were destroyed and another where just two homes remain.

The UN has confirmed four deaths in the disaster – three nationals and a woman from Britain.

Aid efforts have been hampered by ash continuing to fall from the volcano.