People on the coast in the south of the main island sought higher ground on Saturday after the latest of a series of major tremors.
Radio New Zealand reports Saturday’s earthquake did result in flooding in several coastal villages.
The provincial disaster co-ordinator, Franklin Lacey, says the geophysics advice they have received from Port Moresby is that more tremors are likely this week and people need to keep away from the coast.
He says a few houses, a church building and a school were toppled by the quake which measured 7.5 and was centred in the south.
Lacey says they are still waiting for full reports of the impact of the latest quake – the fourth in a little over a week – but there have been a number of slips which have blocked roads and swamped food gardens. There is one report of a woman being injured.
Lacey says people in South Bougainville have also reported that Mount Loloru, a 1800 metre high volcano, has begun to emit steam or smoke.
He says they are not concerned at this point but are sending staff to assess the threat.
Loloru is believed to have last erupted 3000 years ago.