Raja Bhaiya's representative Hariom and his driver Rohit were today questioned by the agency, sources said.
Besides, chairman of Kunda nagar panchayat, Gulshan Yadav was again called for questioning by the CBI team.
On the fateful day, Hariom and Gulshan had rushed the Balipur village head, Nanhey Yadav, to hospital after he was shot at and had also brought his body back to the village, sources said.
Sources did not rule out questioning of Raja Bhaiya soon, as barring the former controversial minister, all the other accused in the DSP murder case including Rohit, Hariom and Gulshan have been called and questioned by the probe team.
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After the murder of Nanhe Yadav, the Kunda circle officer had rushed to the village and was killed by a mob.
Nanhey's brother, Suresh, was also killed.
After his name figured in the case, Raja Bhaiya had to resign from the ministry and soon after the case was handed over to the CBI on the demand of the slain officer's widow.