Mohammad Salim was appointed as Special Judicial Officer for trial of all cases against Kanu in the Beur jail here where he is lodged at present, district court sources said.
The Governor's order for appointment of the special judicial came in the wake of a direction of the Patna High Court, the sources said.
So far, the top Maoist is being tried in six cases in Patna, Jehanabad and Gaya.
More than 200 of them had returned to jail while many others were rearrested by the police.