A magnitude 6.0 earthquake struck Papua New Guinea today, about 691 kilometers (428 miles) northeast of the capital, Port Moresby, the U.S. Geological Survey said.

The temblor struck at 11:13 a.m. local time at the depth of 10 kilometers in the Bismarck Sea, the USGS said on its Web site. No tsunami warning was issued. A similar magnitude quake was also reported on Oct. 28, it said.

Papua New Guinea, located in the South Pacific, consists of a mainland and a collection of islands north of Australia. The mainland is part of New Guinea, the second largest island after Greenland, according to government data.