MANILA - A 6.6 magnitude earthquake struck the Moro Gulf off Mindanao shortly before 7 p.m. Sunday, the US Geological Survey (USGS) reported.

The USGS said the earthquake struck at 6:58 p.m. Philippine time.

The epicenter was located at 6.721°N, 123.480°E, or roughly 100 kilometers west southewst of Cotabato City, at a depth of 630.5 km, based on USGS data.

The Pacific Tsunami Warning Center reported there is no "destructive tsunami threat" that exists after the quake.

No damage has been reported so far as of posting time.