Security forces were put on high alert in Odisha for possible Maoist activities after one of the top guerrillas, Kishenji, was killed in neighbouring West Bengal a day ago, police said on Friday.
"The rebels may try to get across the border for a safe haven," a police official said.
"We have asked police and security forces, especially in the district of Mayurbhanj, to remain watchful," he added. Mayurbhanj is close to the West Bengal border.
Fifty-five-year-old Mallojula Koteshwar Rao alias Kishenji, the number three in Communist Party of India (CPI-Maoist) ranks, was killed Thursday by security forces during a gun battle in Burishol forest in West Bengal's West Midnapore district, police said.
Alerts have been sounded in Maoist-hit areas across Odisha as the CPI-Maoist cadres may retaliate to avenge the killing, the official said.
Maoists are active in over half of Odisha's 30 districts.