Five Singapore primary school students and one teacher were among the 13 people so far confirmed killed by an earthquake that rocked Malaysia's Mount Kinabalu, the city-state's government said Sunday.

"We are deeply saddened to inform that the bodies recovered by the Malaysian authorities have been identified by their next-of-kin as five students and one teacher from Tanjong Katong Primary School," said a statement by Singapore's Ministry of Education.

The statement also confirmed that a Singapore adventure guide who accompanied a school excursion to the popular climbing destination was killed in Friday's quake, which triggered massive landslides on the mountain.