6.1-magnitude quake strikes off western Indonesia, no tsunami alert issued

JAKARTA - An earthquake measuring 6.1-magnitude rocked Indonesia's western East Java province on Thursday, but was not potential for tsunami, the meteorology and geophysics agency said.

The 6.1-magnitude quake was upgraded from 5.6-magnitude reported several minutes earlier, official in charge at the agency Alfath Abubakar, told Xinhua via phone.

The quake rocked at 14: 06 pm local time with epicenter at 56 km Tuban of the province and with the depth at 656 km under sea bed, the official said.

Several minutes later, a 6.0-magnitude quake with the depth at 623 km under sea floor, and is believed to be an aftershock, struck off the province, he said, adding an analysis on the status of the last quake is being undertaken.

Indonesia is prone to quake as it lies on a vulnerable quake-impacted area called "the Pacific Ring of Fire".