Philippine, South China Sea
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The U.S. Tsunami Warning System issued a tsunami threat after the quake, saying hazardous waves were possible for coasts near the epicenter.
Philippine seismologists say that a new offshore earthquake with a preliminary 6.8 magnitude hit the same southern region struck earlier by an earthquake with a magnitude of 7.4.
The 7.4-magnitude earthquake struck off the coast of the southern Philippines island of Mindanao and prompted a tsunami warning.
Two powerful offshore earthquakes struck off the southern Philippines on Friday, killing at least seven people, while towns near the epicenter suffered structural damage and authorities warned of strong aftershocks.
The quake and aftershock come two weeks after dozens were killed in another earthquake in the quake-prone Philippines.
Locals in coastal areas were ordered to evacuate immediately and see higher ground. Follow Newsweek for live updates.
The United States condemned China on Monday after Washington's ally the Philippines and China traded accusations over a maritime confrontation near disputed islands in the South China Sea.
The PHIVOLCS agency said that the first tsunami waves are expected to arrive before 11:43 local time and could last for several hours.
An official has called for a whole-of-government effort to optimize the workforce while demographic conditions are favorable.