There was a 7.1 magnitude earthquake 139.3 km northwest of Ternate, Indonesia.
It struck at a depth of 45 kilometres.
Indonesian authorities issued a tsunami warning in the aftermath.
Residents felt the quake "very strongly" as well as leaving their homes for higher ground.
The tsunami threat has since passed.
There were no reports of a tsunami.
The Pacific Tsunami Warning Center said, "minor sea-level fluctuations may occur in some coastal areas near the earthquake over the next few hours."