Employees gather outside a factory in Cilegon on January 14, 2022, shortly after a 6.6-magnitude earthquake struck off Indonesia's Java island. (PHOTO / AFP)

JAKARTA - A 6.6-magnitude earthquake hit Indonesia's western province of East Java on Friday, but did not trigger a tsunami, the country's meteorology, climatology and geophysics agency said.

The quake struck at 4:55 pm Jakarta time (0955 GMT), with the epicenter situated 68 km northwest of Tuban district and at a depth of 632 km under the seabed, the agency said.

The tremor did not have the potential to trigger a tsunami, it added.

Daryono, head of the agency's quake and tsunami mitigation division, told Xinhua that the tremors were also felt in the provinces of West Java, Banten and West Nusa Tenggara.

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Indonesia, an archipelagic country, sits on a vulnerable quake-hit zone called "the Pacific Ring of Fire."