Executive engineer Satish Chikhlikar and sectional engineer Jagdish Wagh were caught on April 30 while accepting bribe of Rs 22,000 from a road contractor to clear his pending payment with the PWD.
In a letter to DGP (ACB) Raj Khilnani, Somaiya said the Nashik incident has shown "involvement and connivance of higher ups in the PWD contract/kickbacks."
Despite such a major development, where crores of rupees have been recovered, there is still no involvement of RBI, Income Tax and ED in the case, he said.