Three CRPF personnel were injured, one of them critically, on Monday in Chhattisgarh's Sukma district when a landmine explosion hit them, according to police.
The mine was planted by Maoists, police said.
The attack was carried out when a group of 30 securitymen of the 74 Battalion of the Central Reserve Police Force (CRPF) was on a routine patrolling and returning near Dorenpal area's Chintagufa.
Additional Superintendent of Police Santosh Singh said the injured were being shifted to Raipur after initial medical treatment was rendered to them.