An earthquake has struck Indonesia's eastern province of West Papua, causing nervous residents to flee their houses in panic days after a tsunami killed hundreds further west in the vast archipelago.

Indonesian authorities measured Friday's quake with a 6.1 magnitude and said it was "felt quite strongly" for several seconds. The US Geological Survey gave a 5.8 magnitude measuring.

There were no immediate reports of casualties or damage. The region in Papua, which makes up half the island known as New Guinea, is sparsely populated.