A joint team of Orissa and Andhra Pradesh police conducted a raid on a Maoist hideout near Malkangiri and arrested four ultras.
The joint team of Special Operations Group (SOG) of Orissa and Andhra Grey Hounds personnel conducted the surprise raid when the Maoists were holding a meeting near Dulagandi village on Saturday, officer-in-charge of Kalimela police station S Murmu said.
Four ultras including some area commanders of CPI (Maoist), including a woman, were arrested on the spot. There was no exchange of fire.
The arrested persons have been identified as Suresh, Sanyasi Rao, Banaya and Vijaya. However, some other ultras present there managed to escape, said Murmu.
A six kg landmine, 37 gelatine sticks, about 100 metres of fuse wire and a country made gun were seized from their possession.
The arrested ultras would be produced before a court in Malkangiri on Saturday, he said.
Meanwhile, security had been tightened in Malkangiri district ahead of the proposed visit of CM Naveen Patnaik on Saturday.
Patnaik is scheduled to lay the foundation of a bridge over Gurupriya river near Janbai. He will also be laying the foundations of district collector's office building and an airstrip in Malkangiri. Moreover, he will inaugurate a community centre.