Earthquake reported near Solomon Islands

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(CNN) — A 7.6-magnitude earthquake struck Sunday morning near the Solomon Islands, generating a tsunami warning for portions of the South Pacific region, officials said.

The Pacific Tsunami Warning Center based in Hawaii said it did not know whether a tsunami had been generated, but issued a warning for the Solomon Islands, Papua New Guinea and Vanuatu.

The U.S. Geological Survey said the quake, initially estimated at a magnitude 8.3, occurred at a depth of about 29 kilometers (18 miles).

The USGS said it occurred about 60 miles south-southeast of Kirakira, Solomon Islands.