A powerful magnitude 8 earthquake hit the Papua New Guinea and Solomon Islands on Sunday, but no tsunami was reported hours after the Pacific Tsunami Warning Center issued an alert for nearby islands.

The quake struck at a depth of 167 kilometers (103 miles) under Papua New Guinea’s most eastern province of Bougainville, where the two South Pacific countries meet in a continuous archipelago, said Chris McKee, assistant director of Papua New Guinea Geophysical Observatory in Port Moresby.