An earthquake of 5.5 magnitue jolted off West Sumatra province in western Indonesia earlier on Tuesday, the meteorology and geophysics agency said, Trend reports citing Xinhua.
The quake struck at 06:49 a.m. Jakarta time on Tuesday, Gian Giananjar, an official from the agency, told Xinhua via phone.
The intensity of the quake was felt at 2 to 3 MMI (Modified Mercalli Intensity), the official said.
An aftershock of 5.0 magnitude followed at 07:03 a.m. Jakarta time, the official said.
The tremors did not trigger tsunami and so far there was no preliminary report of damage or casualty, he added.
Indonesia is prone to quake as it lies on a vulnerable quake-impacted zone called "the Pacific Ring of Fire."