An earthquake with a preliminary magnitude of 7.6 has struck off the coast of the southern Philippines island of Mindanao. A tsunami warning was issued.

Seismologists say tsunamis expected to hit Philippines and Japan in early hours of Sunday morning

A powerful earthquake with a preliminary magnitude of 7.6 struck Saturday night off the coast of the southern Philippine island of Mindanao and Philippine authorities issued a tsunami warning.

The quake struck at 10:37 p.m. at a depth of 32 kilometers (20 miles), according to the U.S. Geological Survey. There were no immediate reports of damage or casualties.

The Pacific Tsunami Warning Center said based on the magnitude and location, it expected tsunami waves to hit the southern Philippines and parts of Indonesia, Palau and Malaysia.