Chhattisgarh's chief minister-designate and BJP leader Vishnu Deo Sai will take oath along with his cabinet colleagues on December 13 at a ceremony in Raipur in the presence of Prime Minister Narendra Modi and other dignitaries, it was announced on Monday.

Besides Sai (59), who will be the BJP's first tribal CM, his council of ministers will also be sworn-in at the ceremony, an official release said.