An earthquake with a magnitude of 6.7 rocked Indonesia's western province of North Sumatra on Friday, but did not potentially trigger a tsunami, the meteorology and geophysics agency said here.
Earlier the agency released the quake at a magnitude of 7.2 before revising it, Ali Imran, an official in charge at the agency, told Xinhua via phone.
The quake jolted at 13:33 p.m. local time (0633 GMT) with the epicenter at 141 km southwest of Nias Barat district and 19 km under sea bed, he said.
"For this quake, no tsunami alert was issued as it was not potential for a tsunami," said Imran.
The intensity of the quake was felt at III to IV MMI (Modified Mercalli Intensity) at Gunungsitoli town, Nias district, Nias Barat district and Nias Selatan district, the official said.
The tremors were also felt at a nearby province of Aceh at III MMI, Imran said.
