A 6.2-magnitude earthquake struck Papua New Guinea today,  but no tsunami warning was issued and there were no immediate reports of damage.<br />'' <br />''The US Geological Survey said the quake hit just after 4 pm local time (0600GMT) at a depth of 31 kilometres, some 122 kilometres south of Kokopo, the capital of PNG's East New Britain province.<br />''<br />''Geoscience Australia senior seismologist Trevor Allen said coastal communities near the epicentre would have felt "quite strong ground shaking" as the trembler was close to the shore. But, he said, the area was relatively sparsely populated and flexible building design locally helped limit exposure to damage from quakes.<br />''<br />''Its mountainous and remote terrain means it often takes several days for information about damage from quakes to reach officials and aid agencies.<br />''<span style="color: #000000;"> </span>