Another 6.4-magnitude quake struck eastern Indonesian islands on North Maluku province about five hours earlier late Friday. There were no reports of injuries or damage.

Indonesia, the world's largest archipelago nation, sits along the Pacific Ocean's Ring of Fire, where the meeting of continental plates causes high volcanic and seismic activity.

On Sep 2, a powerful 7.3-magnitude earthquake struck West Java province, killing more than 70 people and leaving dozens of others missing. Hundreds of others were injured and tens of thousands of homes were damaged.

A major earthquake and subsequent tsunami struck in December 2004, leaving more than 170,000 people dead or missing in Indonesia's Aceh province and half a million people homeless.