A 6.1-magnitude earthquake struck off the Solomon Islands on Wednesday, the US Geological Survey said, but there was no immediate tsunami warning issued.
The tremor, at a depth of 64 kilometres (39 miles), hit in the Santa Cruz Islands, some 89 kilometres south of the remote town of Lata, where a tsunami left at least 10 people dead in February.
Geoscience Australia gave a higher preliminary measurement of 6.6-magnitude, but said it was unlikely to have caused a local tsunami in the quake-prone region.
"That magnitude may change over time as we get more data," duty seismologist Spiro Spiliopoulos told AFP, adding that they measured the depth at about 60 kilometres.
"Because of its depth and its somewhat smaller size (to the February quake) I would say it's unlikely to create a tsunami," he said.
The February tsunami, sparked by an 8.0-magnitude quake, killed at least 10 people, destroyed hundreds of homes and left thousands homeless.
The Solomons are part of the "Ring of Fire", a zone of tectonic activity around the Pacific that is subject to frequent earthquakes and volcanic eruptions.
In 2007 a tsunami following an 8.0-magnitude earthquake killed at least 52 people in the Solomons and left thousands homeless.
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