A magnitude 6.2 earthquake has struck near Vanuatu, just hours after a 4.9 rattled the island.
The quake hit shortly after 2pm (New Zealand time) at a depth of 58km.
Its epicentre was 90km west of Vanuatu's Port-Vila, according to USGS.
The first 4.9 quake struck in the early hours of the morning on Tuesday, at a depth of 10km.
At this point there are no tsunami warnings.