It will be tomorrow before a full picture is gained of the impact of the latest major earthquake to hit the autonomous Papua New Guinea province of Bougainville.
Houses, food gardens and roading in southern part of the main island have been affected.
The province has suffered a series of potentially damaging quakes over the past ten days.
The latest on Saturday night registered 7.5, with an epicentre 75 kilometres to the southwest of Panguna.
There was a tsunami which impacted on some coastal towns.
The Red Cross's Aidah Kenneth says people in Torokina had fled into the hills but had returned by this morning.
She says there have been no reports of injuries or deaths from the latest quake.
The first tremor, ten days ago, claimed two lives.
The acting district executive manager in Siwai, Martin Tumuki, says Saturday night's tremor had a significant impact in his hilly region.
"Several food gardens have been flattened, and we have several houses that have been brought down to the ground. Along our road network there have been landslips."
New Dawn FM reports that houses and water tanks were destroyed by the tidal wave which hit Torokina.