The Anti-Corruption Bureau (ACB) officials are repeatedly conducting searches at the residence and other properties across the State belonging to the Irrigation Department EE, N Sridhar since Wednesday early hours.
At least five teams are conducting simultaneous searches at 12 places in Hyderabad,
Siddipet and Karimnagar.
Earlier, the ACB had booked a disproportionate asset case against Sridhar. He previously worked in the management of the Kaleshwaram Project.
He was reportedly detained for further questioning.