While the latest trembler damaged hundreds of additional buildings, Social Affairs Ministry's crisis center announced that 529 people were confirmed dead and 440 were seriously injured.
Majority of the deaths were reported from Padang, a coastal city and capital of West Sumatra province, while the rest of the fatalities were seen in the adjoining four districts.
Before leaving to Padang, President Susilo Bambang Yudhoyono said, "Let's not underestimate (the disaster). Let's be prepared for the worst. We will do everything we can to help the victims."
The rescuers still continue to reach the survivors of the previous 7.8 magnitude earthquake that has trapped thousands under the collapsed buildings.