According to a report released by the Indonesian Bureau of Meteorology, Climatology and Geophysics, at 7:22 local time on December 27, a 5.9 magnitude earthquake occurred 26 km southeast of Engano Island in Sumatra. The depth of the earthquake was 19 kilometers. The epicenter was at 5.58 degrees south latitude and 102.27 degrees east longitude.

According to a report released by the Indonesian Bureau of Meteorology, Climatology and Geophysics, at 7:22 local time on December 27, a 5.9 magnitude earthquake occurred 26 km southeast of Engano Island in Sumatra. The depth of the earthquake was 19 kilometers. The epicenter was at 5.58 degrees south latitude and 102.27 degrees east longitude.