A village panchayat head was arrested on Monday while a JD-U leader and two others were detained after a RTI activist and his friend were shot dead by criminals in Bihar's Jamui district, police said.
Valmiki Yadav and his friend Karu Yadav were attacked by motorcycle-borne assailants near Bichwe village on Sunday evening.
Panchayat head Krishna Ravidas was arrested and Janata Dal-United block president Suresh Mahto and two others were detained for interrogation, said police officer Rampukar Singh.
"Prima facie, it seems to be a pre-planned conspiracy," he said.
Valmiki Yadav is said to have exposed several rackets and financial irregularities in the public welfare schemes and developmental works in the district.
This is the third such crime in the last three months. A Right to Information (RTI) activist was shot dead in Vaishali district in April whereas another RTI activist was shot dead in East Champaran district last month.
--IANS
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