A earthquake rattled Papua New Guinea's island of Bougainville Saturday morning but there were no immediate reports of damage or casualty yet, seismologists said.

The quake, which struck at 11:42 a.m. local time (01:42 GMT), was about 80 kilometers west of Arawa city at a depth of 65 kilometers, according the U.S. Geological Survey.

"At this stage we have not received any reports of any damage," a spokesman for PNG's national earthquakes center said.

"We have not had any report of such activity as a tsunami, but normally (with) earthquakes of about 6.2 we rarely anticipate tsunamis along our coastline," he added.

Papua New Guinea sits on the so-called Pacific "Ring of Fire", where continental plates meet. The region is frequently hit by earthquakes.

(Xinhua News Agency July 25, 2009)