Venkat Reddy, B Venkatesh, Madhusudhan Reddy and R Venkataiah were arrested by a Special Operation Team of Malkagiri Zone for allegedly supplying and selling electric detonators and gelatin sticks without license, a release issued by Cyberabad police said.
"Prime accused A Srinivas Reddy, who is absconding, is the licensed owner and he knowingly endorsed the business to other accused who were illegally selling the explosives to unauthorised persons," it said.
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personnel seized a tractor-full of grains and other food materials being transported to Maoists at Budha Pahar in the district.
The tractor was being driven by its owner Amar Dayal Yadav, who along with five others, were arrested, the SP said.
The Maoists had planned a meeting in November there.