The bodies were recovered this week, EMTV News reported, adding that gardens, homes and farms were also destroyed.
With road access and bridges blocked, the community has a called on authorities to provide relief assistance.
EMTV News reported that pictures supplied by a local inhabitant show the damage caused by the mudslide near the Mt Wilhelm secondary school at Kegesuglo-Gembogl.
The mudslide began on Good Friday, originating at a stream near the secondary school.
Churches, shops, roads and bridges leading to Usino-Bundi and Mt Wilhelm were also damaged.
A landslip has also been reported on the Kundiawa-Gembogl Highway, EMTV News reported.