Xinhua reported citing the Indonesian National Disaster Management Agency spokesperson Abdul Muhari that the cliff on the side of the road suddenly fell, hitting multiple vehicles in the middle of a traffic jam on the Tarutung-Sibolga national road on Saturday at 5 p.m. local time.

"Those who died were a husband, wife, and a toddler in a car," Muhari said.

Seven people were slightly injured and six others were seriously injured. All were taken to nearby medical facilities.

The landslide also damaged a house, five minibusses, a logistics truck, and a few motorcycles.