Kupang (Antara NTT) - Three consecutive earthquakes jolted the East Sumba District in East Nusa Tenggara Province on Thursday, according to the Meteorology, Climatology and Geophysics Agency (BMKG).

The first quake, measuring 4.7 on the Richter scale, occurred at 12:53:08 a.m. Central Indonesia Standard Time (WITA).

The epicenter was located 74 kilometers (km) southwest of East Sumba at 10.64 degrees Southern Latitude and 120.25 degrees Eastern Longitude, at a depth of 10 km.

The second quake, measuring 4.2 on the Richter scale, occurred at 9:12:29 a.m. WITA, with the epicenter located at 41 km south of East Sumba at 10.35 degrees Southern Latitude and 120.31 degrees Eastern Longitude, at a depth of 10 km.

The third quake occurred at 10:14:46 a.m. WITA, measuring 4.0 on the Richter scale. The epicenter was located at 51 km south of East Sumba at 10.37 degrees Southern Latitude and 120.31 degrees Eastern Longitude, at a depth of 14 km.

So far, no immediate report of material damage or tsunami has been reported, but the people were encouraged to stay calm and continue to follow the directives of the Regional Disaster Mitigation Agency and the information provided by the BMKG.