The epicenter of the earthquake, which struck at 02:22:09 Western Indonesia Time (WIB), was located at sea, some 90 kilometers northeast of Buol, at a depth of 10 kilometers, the BMKG noted on its official website.
The earthquake was felt at Modified Mercalli Intensity (MMI) scale IV in Buol and at MMI III in Bone Bolango and Toli-Toli.
An earthquake of MMI IV could be felt by several people within and outside the houses, with the windows or doors creaking and audible wall sounds.
Meanwhile, an earthquake of MMI III is considered weak and can only felt indoors as a vibration.
No immediate reports were received of any material damage, injuries, or fatalities.
An earthquake of magnitude 5.8 can cause considerable damage to land. A 7.4-magnitude earthquake had hit several parts of Central Sulawesi on September 28, 2018.
The strong earthquake that was followed by a tsunami and soil liquefaction in Palu, the capital of Central Sulawesi Province, claimed 2,102 lives, injured 4,612, and rendered 680 others missing.
A total of 68,451 homes incurred serious damage, while 78,994 people were displaced.
Meanwhile, material losses inflicted by the twin deadly disasters were estimated to reach Rp15.29 trillion.
Related news: No Indonesian falls victim to Japan's powerful quake
Related news: 5.5-magnitude quake shakes Pesisir Barat in Lampung
EDITED BY INE