Armed Maoists have gunned down a forest guard and ransacked a check-gate inside the Sunabeda sanctuary in Orissa’s Nuapada district, police said on Thursday.

A group of about 40 Maoists, five of whom were armed, killed forest guard Sangram Swain last night, a senior police officer engaged in anti—Maoist operations said.

“These ultras could be the same who are responsible for the Dantewada massacre. They are suspected to have been taking shelter in the sanctuary area since then,” he said.

This is the second Maoist attack in the Sunabeda sanctuary within a year.