Jakarta. An earthquake measuring 6.4 magnitude on the Richter scale struck off the coast of West Java on Tuesday afternoon (23/01), Indonesia's Metereology, Climatology and Geophysics Agency, or BMKG, announced on Twitter.
BMKG said there was no potential of a tsunami from the quake, which lasted about 20 seconds.
Tremor was also felt in the capital city of Jakarta and in Bandung, the capital of West Java. Some office buildings in the capital, including BeritaSatu Plaza and Patra Jasa in the south of the city, activated their emergency evacuation protocols and rushed people out on to the streets.
The epicenter of the earthquake was in the Indian Ocean, 81 kilometers southwest of Lebak, Banten, at a depth of 10 kilometers.
Residents in Jakarta and surrounding cities have been ordered to evacuate high-rise buildings until further notice.
No casualties have been reported.