MANILA – At least 37 people were killed, and some 500 people were injured after a 7.8-magnitude earthquake struck southern Philippines on Monday morning, authorities said on Tuesday.

According to the Philippines' Office of Civil Defense, the fatalities were caused by earthquake-triggered landslides, drowning, and injuries sustained from falling or collapsing debris. In Sarangani province, 14 people died when a landslide buried their homes at the foot of a mountain.

The Philippines' Department of Education said the quake had affected over 8,600 schools, disrupting classes for over 4 million learners and more than 150,000 school personnel. The country's Department of Energy said that around 864,000 households experienced power interruptions.

READ MORE: 32 killed, buildings damaged, schools suspended after strong quake in S. Philippines

The Department of Public Works and Highways said the damage to property caused by the quake has reached 1 billion pesos (about $16.2 million) in General Santos City, a port city with a population of over 700,000.

  According to civil aviation authorities, landing and takeoff operations at the General Santos International Airport are currently limited to government, military, and humanitarian flights until 6 pm on June 11.

  The Philippine Institute of Volcanology and Seismology said the tectonic earthquake occurred at 7:37 am local time at a depth of 33 km, with the epicenter 32 km southwest of the coast of Maasim town in Sarangani province on Mindanao Island.