Prem Singh (63), his 58-year-old wife Dhanuli Devi and their grandson Ankit (13) were killed around seven months ago at Birkhola village of Ranikhet area in Almora district.
Dharam Buda (24) and Kamal Sahi (32), residents of Kalikot district in Nepal, were arrested from forests of Dhyadi this afternoon, according to sources at Police headquarters here.
Police have recovered some jewelleries from them which they had looted after the triple murder, they said.