Manado: A powerful undersea earthquake rocked eastern Indonesia on Wednesday evening, causing fresh panic in an area that has been hit by a series of strong tremors in recent days.
No tsunami warning was issued and there were no reports of casualties or damage after the quake, which the US Geological Survey said had a magnitude of 6.8 and was 41 kilometres (25 miles) under the Molucca Sea.
But people ran out of their homes in the city of Manado, on the northern tip of nearby Sulawesi island, where the quake was strongly felt.
"I was watching television when I felt the ground shake strongly. I screamed to my wife to get out of the house and quickly took my five-year-old son, who was asleep in the bedroom, out of the house," Hendra Pontoh, a resident of Manado, said.
The initial quake was followed by three aftershocks measuring more than magnitude 5.0, said Jerisman Purba from the Indonesian meteorological agency. The quake, which struck at around 10:30 pm (1430 GMT), was the latest in a recent series of tremors under the Molucca Sea.
On November 15, a 7.1-magnitude quake sparked a tsunami alert and generated tiny waves, but did not cause any casualties or damage.
After today's quake, the Pacific Tsunami Warning Center said there was no threat of a tsunami and local authorities did not issue an alert. The USGS originally put the magnitude at 7.0.
Indonesia sits on the Pacific "Ring of Fire" where continental plates collide, causing frequent seismic and volcanic activity.
A huge undersea quake in 2004 triggered a tsunami that killed more than 170,000 people in Aceh province, on western Sumatra island, and tens of thousands more in other countries with coasts on the Indian Ocean.
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