Maoists blew up two mobile phone towers in Orissa's Malkangiri district even as security was tightened in the state in view of 'martyrs week' being observed by the ultras on Tuesday, the police said.
Two mobile phone towers of different private operators were blasted by Maoists at Padmagiri and Tandapali, about 25 km from district headquarters of Malkangiri in the wee hours, Malkangiri Superintendent of Police Satyabrata Bhoi said.
Normal life was affected in Kalimela, Motu, Malkangiri Village number 79 and Padia areas of Malkangiri district where shops and business establishments remained closed and vehicular movement came to a halt as the 'martyrs week' called by maoists began, he said.
Orissa's borders with Andhra Pradesh and Chhattisgarh were sealed as a precautionary measure to prevent entry of unwanted elements, while a high alert was sounded in southern districts of Malkangiri, Koraput and Rayagada, a senior police officer said.
Apart from normal anti-Maoist operations, the police made special arrangements like thorough search of vehicles coming from neighbouring states, he said.
The red rebels are observing the week marking the 36th death anniversary of Naxalite leader Charu Majumdar, sources said.