Gulab Khatri was apprehended when a squad of security forces led by paramilitary CRPF along with state police was out for an operation in the Jorag forests in Raidih of the district.
Officials said he is Sub-Zonal PLFI commander of the red ultras active in the area.
Fourteen rounds of ammunition and a pistol wer recovered from Khatri, who has been handed over to local police, they said.