The search was conducted by sleuths of Economic Offence Unit (EOU) of Bihar police in 17 premises belonging to executive engineer of Rural Engineering Organisation (REO) Mithilesh Kumar, executive engineer of public health and engineering department Nageshwar Sharma and Sub-inspector (Enforcement) Mohammad Yunus, besides that of the DIG, according to Additional Director General of Police, Headquarters, Ravinder Kumar.
The search continued till early morning on Monday.
Director General of Police Abhyanand said that raids were conducted after registration of three FIRs with the EOU police station against them under Prevention of Corruption Act.
No arrest has been made so far but investigations were on in all the cases, he said, adding the departments concerned would be given details of the raids and recoveries by police for initiating action against them.
DIG Alok Kumar has already been put under suspension by the state government following complaints of alleged extortion of Rs 10 crore from a liquor trader in Saran district recently.
Kumar, an IPS officer of Jammu and Kashmir cadre, had earlier served as senior superintendent of police of Patna.