A powerful earthquake shook Papua New Guinea early today, but there were no reports of damage or injuries, a disaster official in the country said.

The quake had an initial magnitude of 6.5 and struck at 12:20 a.m. local time in the New Britain region of Papua New Guinea, the U.S. Geological Survey said.

It was estimated to have been at a depth of six miles, it said. The region is 395 miles northeast of Papua New Guinea’s capital, Port Moresby, and 1,440 miles north of Brisbane, Australia.

There were no immediate reports of damage or a tsunami, said Martin Mose, assistant director for community and government liaison at Papua New Guinea’s National Disaster Management Office.