A 6.7 magnitude earthquake struck off Indonesia's main island of Java and was felt hundreds of kilometers away in the capital, Jakarta, but no major damage was reported.
It had no potential to cause a tsunami, said Subagio of the Indonesian Meteorology and Geophysics Agency. Subagio uses one name like many Indonesians.
The quake was 11 kilometers (7 miles) deep and the epicenter was located 170 kilometers (106 miles) east of Flying Fish Cove, on Australia's Christmas Island, and more than 400 kilometers (249 miles) south of Jakarta, the U.S. Geological Survey said.
Subagio said the temblor was also felt across parts of west and central Java. No damage was reported on Christmas Island.
Indonesia is prone to seismic upheaval due to its location on the Pacific "Ring of Fire," an arc of volcanoes and fault lines encircling the Pacific Basin.
In 2004, a monster earthquake off Aceh, on the western tip of Indonesia's Sumatra island, triggered a tsunami that killed 230,000 people across Asia. Most of the deaths were in Aceh.
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