Modi said he has talked to Home Minister Rajnath Singh and Chhattisgarh Chief Minister Raman Singh and the situation is being monitored.
"Words are not enough to condemn the brutal and inhuman attack by anti-national elements in Sukma, Chhattisgarh. I salute the courageous CRPF personnel who have been martyred today. Our thoughts are with the families of those who lost their loved ones.
"Have spoken to Home Minister @BJPRajnathSingh &Chhattisgarh CM drramansingh. We are monitoring the situation closely," the PM tweeted.
Maoists on Monday killed 13 CRPF personnel, including two officers, and injured an equal number in the second attack on the force in 10 days in the same area in the Naxal hotbed of Sukma district in the state.
Image used for representational purposes only
Delhi church gutted in fire, foul play suspected
Govt reduces import tariff value on gold, silver
India to remain in Adelaide, first Test rescheduled to Dec 9