The Karnataka High Court on Wednesday refused to grant bail to IFS officer S. Muthaiah and retired Deputy Director of Mines and Geology Department S.P. Raju, accused in the illegal mining case against the former Minister G. Janardhan Reddy-owned Associated Mining Company (AMC).

Justice H.N. Nagamohan Das passed the order while holding that the court cannot brush aside the apprehension of the Central Bureau of Investigation (CBI), which is probing the case, that the accused may tamper with the witnesses and also hamper further investigation if enlarged on bail.