At least five Central Reserve Police Force (CRPF) personnel were killed in an ambush by the Maoists in the rebel-dominated Dantewada area of Chhattisgarh on Tuesday night.
Initial reports said the CRPF men were in a vehicle which was blown up by a landmine planted by the Maoists.
Details of the incident that occurred near Sukma are awaited.
Last year there were some major attacks on men in uniform in the region by the Maoists.
On May 17 of 2010, a landmine blast had killed more than 40 people, including civilians and Special Police Officials (SPOs).
The attack had occurred just a month after Dantewada witnessed the killing of 76 CRPF men in April that year.