The probe will be conducted by the police attached to the state Lokayukta (ombudsman), Additional City Civil and Sessions Judge C.B. Hipparagi ordered.
He is hearing five private complaints of corruption and illegal land deals against Yeddyurappa.
The complaints were filed by two advocates after Governor H.R. Bhardwaj granted them permission to prosecute the Bharatiya Janata Party’s first chief minister in south India over corruption and illegal land deal charges.