The agency initially reported the quake’s magnitude to be 6.1 before revising it, Xinhua news agency reported.
The earthquake occurred at 07.02 a.m. Jakarta time (0002 GMT) with its epicenter situated 46 km southeast of Ransiki town, and a depth of 11 km under the seabed, the agency said.
The intensity of the quake was felt at III to IV MMI (Modified Mercalli Intensity) in the Ransiki town, it added.
The agency did not issue a tsunami warning as the tremors would not potentially trigger giant waves.
Indonesia, an archipelagic country, is prone to earthquakes because of its location along the Pacific Ring of Fire, a tectonic belt of volcanoes and earthquakes.
IANS