Union Home Minister Rajnath Singh today said the government has taken as a 'challenge' the killing of Central Reserve Police Force personnel by Naxals in Sukma in Chhattisgarh.

"We have taken the attack as a challenge," he told reporters in New Delhi.

Singh described the incident as 'sad and unfortunate'.

"It is a very sad and unfortunate incident. I will talk to Chief Minister Raman Singh for more details," he said.

Earlier, Singh asked Minister of State for Home Hansraj Ahir to travel to Chhattisgarh to take stock of the situation. -- PTI