6.9-magnitude earthquake strikes off central Indonesia, tsunami alert issued

JAKARTA -- An earthquake measuring 6.9 on the Richter scale rocked off Indonesia's Central Sulawesi province Friday evening and a tsunami warning was issued, an official of the meteorology and geophysics agency said.

"We have issued a tsunami warning as this quake is potential for that," the official in charge of the agency told Xinhua over phone.

The intensity of the quake was felt strongly at 4 MMI (Modified Mercalli Intensity) in Luwu, he said.