The Central Bureau of Investigation is the Central Government investigation agency in India.
CBI website has info about CBI network - with zonal and other office address and contact info, organizational chart, performance, RTI, photo gallery, major speeches, Directorate of Prosecution (DOP), interpol delhi, CBI academy, medals, wanted by CBI, pending for, prosecution, fighting corruption etc
Plot No 5-B, 6th Floor,
CGO Complex,
Lodhi Road, New Delhi - 110003
Web : http://cbi.nic.in/