By Xinhua,
Jakarta : An earthquake with the magnitude of 5.8 rocked Sumatra Island of Indonesia on Thursday morning, but there was no immediate report of damage or casualty, meteorology agency said here.
The quake struck at 05:22 Jakarta time (2222 GMT Wednesday) with epicenter at 164 kilometers southwest Lais town of Bengjuku province and at 20 kilometers in depth, an official of the agency said.
About one hour later, a tremor with the magnitude of 5.4 jolted the island, said the official.
Indonesia sits at a vulnerable zone so called “the Pacific Ring of Fire” where two continental plates meet that cause frequent volcanic movements.