MELBOURNE, Australia — A strong magnitude 6.5 earthquake struck Papua New Guinea on Monday, authorities said, but there was no tsunami alert or immediate report of damage.

The quake struck the South Pacific Island nation 110 kilometers (68 miles) southeast of the West New Britain provincial capital Kimbe at a depth of 68 kilometers (42 miles) shortly before 7 a.m. local time (21:00 GMT), the U.S. Geological Survey said in a statement.

The U.S. Tsunami Warning System said there was no tsunami alert.

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