The National Investigative Agency (NIA) has arrested Sheshnath Singh, an Assistant Sub-Inspector (ASI) of Jharkhand Police, in connection with murder of MLA Ramesh Munda in 2008.
Singh was arrested on Saturday and had been sent to police custody till October 15.
After investigation, it was revealed that Singh provided advance information about the movement of Munda to the Naxalites after which they chalked out the plan to kill him.
The teams of NIA are also conducting searches at four locations in Ranchi in connection of the case.
Munda, the sitting Janata Dal (United) MLA from Tamar, was shot by suspected Naxalites when he was delivering his speech at a school function at Bundu, located 60 kms from state capital Ranchi.
Two of the MLA's bodyguards, a party colleague and a student were also killed in the attack.
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