KUALA LUMPUR - Four weak tremors have been reported in Malaysia's Sabah state in a period of four hours on Sunday morning, Bernama reported

The latest was a 3.1 magnitude quake that struck at 11.35am, 16km north-west of Ranau, Sabah, according to a statement from the Malaysian Meteorological Department.

The earliest occurred at 7.35am, 25km south-east of Kota Belud, and measured magnitude 3.0.

The second tremblor was recorded 90km north-east of Labuan at 8.40am, and was magnitude 3.2.

The third movement was detected at 9.16am, and happened 1km north of Ranau. It had a magnitude of 2.7.

It comes after a magnitude-4.5 quake occurred near Ranau on Saturday afternoon.

The Malaysian Meteorological Department said the "weak earthquake" occurred 25km north-west of Ranau at 1.45pm.

The two quakes followed a larger 5.9-magnitude one on Friday, which hit 16km north-west of Ranau at 7.15am, killing at least six Singapore primary school pupils, their teacher and an adventure guide.