A powerful natural disaster hit off the southwest coast of the Indonesian island of Sumatra.
Residents ran from their homes and there were power outages in some areas but no reports of casualties or structural damage to buildings, Nugroho said.
A shallow quake measuring 6.6 Richter scale jolted Bengkulu province in western parts of Indonesia on Sunday, but it was not potential for tsunami, according to local meteorology and geophysics agency.
It has been reported that the quake could be felt in Singapore - some 400 miles away.
Bengkulu resident Neng Hasnah said the quake felt very strong for a few seconds, forcing her and her family members to flee her house.
Indonesia sits on the Pacific Ring of Fire where tectonic plates collide, causing frequent seismic and volcanic activity.
"The intensity of the natural disaster felt mild to moderate", he said.