MANILA, Philippines (AP) -- An earthquake with a preliminary magnitude of 7.4 jarred the southern Philippines on Saturday morning, the U.S. Geological Survey said. No damages or casualties were immediately reported.
No tsunami alert was issued, said the Pacific Tsunami Warning Center, based in Hawaii.
The quake hit the Moro Gulf off Mindanao Island at 7:15 a.m. the USGS said.
It was centered some six miles under the Moro Gulf, the agency said, and was some 75 miles southwest of the city of Cotabato on Mindanao, and was about 566 miles southeast of Manila.