Quake rocks China-Russia-North Korea border region

BEIJING — A magnitude 6.7 earthquake rocked the region where China, Russia and North Korea meet Thursday, the US Geological Survey said. There were no immediate reports of damage or injuries.
Though area residents said they did not feel the quake, office towers in Beijing — about 770 miles (1,240 kilometers) away from the epicenter — swayed slightly for about a minute.
The quake occurred 335 miles (540 kilometers) below the earth's surface.