Image showing epicentre of Solomon Islands earthquake.

Image showing epicentre of Solomon Islands earthquake. Photo: USGS

A strong undersea earthquake has struck off the coast near the Solomon Islands, according to the Bureau of Meteorology.

The bureau initially reported that an earthquake of 7.1 had occurred at 5.31am ADET, which would be classified as a major earthquake, but the intensity was later reported as 6.8, which is considered strong.