Five persons were arrested on Sunday in connection with the murder of RTI activist Abhimanyu Panda in Odisha's Kandhamal district, a senior police officer said on Sunday.
Kandhamal Superintendent of Police Prateek Singh told reporters that a revolver, three live-cartridges were recovered from possession of the arrested persons.
A bike and six mobile phones were also seized from them, he said.
An old enmity was the reason behind the murder, the SP said.
Panda was shot dead by bike-borne assailants near his house at Balliguda town on December 10, police said.
People of Balliguda had staged a blockade on the National Highway-59 in the area demanding arrest of those involved in the murder.