The incident occurred when three houses were buried under the mudslide that came from some 250-metre high hill above the human settlement in Dhorpatan Municipality and Nisikhola Rural Municipality in Baglung district.
Those who were killed in the natural disaster include four women and two men, police said.
According to Nisikhola Rural Municipality Chairman Taranath Poudel, the landslide has swept away around a dozen houses in the area.
More than 150 households are at high risk of landslide in various areas in the district.