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Magnitude 7.8 earthquake strikes off S. Philippines, tsunami warnings issued

People walk as they evacuate to the highlands after Indonesia’s geophysics agency issued a tsunami warning following an earthquake off the southern Philippine island of Mindanao that was also felt in Tahuna, Sangihe Islands regency, North Sulawesi province, Indonesia, on Monday.
People walk as they evacuate to the highlands after Indonesia’s geophysics agency issued a tsunami warning following an earthquake off the southern Philippine island of Mindanao that was also felt in Tahuna, Sangihe Islands regency, North Sulawesi province, Indonesia, on Monday. Reuters

MANILA - Officials issued tsunami warnings after a strong magnitude 7.8 earthquake struck off the southern Philippine island of Mindanao on Monday.

A Philippine disaster official said that authorities are verifying reports of at least five deaths in the southern city of General Santos.

Agripino Dacera, the disaster management chief in General Santos, said the fatalities are still being verified as authorities assess the extent of the damage on the ground.

Tsunami warnings were issued in the Philippines, neighboring Indonesia and by the U.S. Tsunami Warning System, with people in coastal areas warned to move to higher ground.

DZBB radio, broadcasting from General Santos about 9.3 miles from the epicenter, reported instances of falling furniture, damage to televisions and other appliances as the area experienced aftershocks and people left their homes to seek safety.

The General Santos disaster office said aftershocks were still being felt and authorities were assessing reports of damage and some injuries.

In the Philippines’ Sarangani province near the epicenter, power and telecommunications were down and school classes were suspended, said local disaster chief Rene Punzalan, adding a damage assessment was underway with no reports yet of any collapsed buildings.

Disaster response underway in Philippines

Philippine President Ferdinand Marcos Jr said authorities were moving fast to coordinate disaster response.

“The national government is moving and we will not leave Mindanao behind,” Marcos said in a statement.

The Philippines and Indonesia experience hundreds of quakes each year and sit on tectonically complex parts of the “Pacific Ring of Fire”, a seismically active belt stretching from South America to the Russian Far East. 

Phivolcs, the Philippine agency, warned of damage and tsunami waves above 1 yard, which could continue for several hours. Indonesia’s geophysics agency BKMG said waves of 8 inches had been detected so far.

Benjie Ancheta, police chief of Alabel town in Sarangani, said the police building had some cracks after the quake, which occurred during their flag-raising ceremony, where some people fainted.

“This is the strongest earthquake we’ve experienced,” Ancheta told Reuters by phone.

Evacuation of coastal areas underway

The German Research Center for Geosciences said the 7.8 magnitude quake struck at a depth of 6.2 miles. It had earlier reported a magnitude of 8.2.

The geophysics agencies of the Philippines and Indonesia reported magnitudes of 7.0 and 7.7, respectively.

Witnesses in Indonesia’s northern city of Manado and residents and officials in the southern Philippines all said the quake was felt strongly. 

A spokesperson for Indonesia disaster mitigation agency said there were no reports of damage so far.

Arlene Hollero, disaster chief of Maasim town in the Philippines’ Sarangani province, said their evacuation was underway in coastal villages and there were no reported casualties so far.

Water receded shortly after the quake, but the seas were normal so far, she said, adding a bridge suffered some cracks and a shrine with a huge cross collapsed.

“It’s devastating,” Hollero told Reuters by phone. 

Additional reporting by Gayatri Suroyo, Ananda Teresia, Fransiska Nangoy and Gnaneshwar Rajan.

A girl sits in the car as she evacuates after Indonesia’s geophysics agency issued a tsunami warning following an earthquake in Tahuna, Sangihe Islands regency, North Sulawesi province, Indonesia, June 8, 2026. REUTERS/Stenly Pontolawokang
A girl sits in the car as she evacuates after Indonesia’s geophysics agency issued a tsunami warning following an earthquake in Tahuna, Sangihe Islands regency, North Sulawesi province, Indonesia, June 8, 2026. REUTERS/Stenly Pontolawokang Stenly Pontolawokang Reuters

Copyright Reuters or USA Today Network via Reuters Connect.

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