A 6.0-magnitude earthquake rocked East Nusa Tenggara Province of Indonesia late on Monday, and no warning of tsunami was issued, Indonesian Meteorology and Geophysics Agency said.

The quake struck at 20:33 Jakarta time (1333 GMT) with epicenter at 45 kilometers northwest Labuhanbajo of East Nusa Tenggara province and 181 kilometers under sea bed, said the agency.

There were no reports of casualties or damage so far.

An earthquake with magnitude of 5.1 rocked Maluku province Monday morning in eastern Indonesia.

Indonesia lies in a vulnerable quake-prone zone called "the Pacific Ring of Fire," where two continental plates meet, causing frequent seismic and volcanic movements.