The mild quake occurred in a forest area, about 156 kilometres south of Hyderabad, according to D Srinagesh of National Geophysical Research Institute (NGRI).
A video footage showed sea waters with the height of less than one metre entering coastal areas in Maluku Tengah district, triggering panic among residents.
A total of eight quakes jolted the state since Wednesday night and all originated in and around Tezpur, the National Centre for Seismology (NCS) said in its bulletin.
The rescue came a day after a four-year-old and a 14-year-old were found alive in the rubble of collapsed buildings in Bayrakli, providing hope that more people could still be rescued.