An earthquake measuring 6.7 on Richter scale rocked East Nusa Tenggara province in central parts of Indonesia, but no tsunami alert was issued, the meteorology and geophysics agency said.
The quake jolted at 22:35 p.m. Jakarta time (1635 GMT) with epicenter at 125 km northwest of Manggarai of the province and with the depth at 599 km under sea bed, official in charge at the agency Widyatmoko noted.
The quake, however, did not trigger a potential for tsunami, he said.
"Accordingly, we did not publish a warning for tsunami. The center is located very deep," he told Xinhua by phone.
Indonesia is prone to quake as it lies on a vulnerable quake-hit zone so called "the Pacific Ring of Fire".