DAVAO, Philippines (AP) — An offshore magnitude 7.8 earthquake hit the southern Philippines on Monday, killing at least 32 people, injuring more than 200 others mostly in ruined buildings and sending a 1-meter (3-foot) tsunami into nearby coasts.

Several mostly low-rise buildings collapsed or sustained heavy damages in the hard-hit city of General Santos. Tsunami damage was reported in at least one southern coastal village. Smaller waves were measured in Indonesia and Palau and as far away as southern Japan.

The quake also triggered a landslide in Glan, a municipality in the province of Sarangani, that killed 13 villagers, Rene Punzalan, a provincial disaster-mitigation official, told the DZBB radio network. Four other villagers died in Sarangani, he said.

The major earthquake was the strongest to hit the Philippines this year, Teresito Bacolcol, the director of the Philippine Institute of Volcanology and Seismology, said. He warned people to seek advice before returning to damaged buildings and houses, which could collapse due to aftershocks.

The United States, a treaty ally of the Philippines, said it was coordinating with Manila and was ready to support Philippine response efforts. France and New Zealand also expressed support.