The agency carried out searches with the help of local police at Surwal village and arrested Harji Patel, Roop Narayan Meena, Mukesh Meena, Shyoji Nath and Sita Ram Meena.
The five accused were produced in a CJM court which sent them to judicial custody.
Inspector Phool Mohammad was burnt alive by the mob after one Rajesh Meena, protesting against alleged police inaction, jumped to death from an overhead water tank in Surwal village.
Meena had climbed atop the water tank protesting against police inaction in arresting a person allegedly involved in the murder of an elderly woman in the village.
The Rajasthan government had decided to refer the case to CBI on June 30, 2011.
