CID is State Govt. Unit &; CBI is Central Govt. Unit. of India.
Crime Branch CID (Criminal Investigation Department) is a specialised wing in many state police forces in India.
Like their counterparts in the Law and Order police, Crime Branch has its own ranks right up to the level of Additional Director General of Police. Crime Branch has senior officers like Superindentents, Inspectors, Sub-Inspectors and the constabulary. Officers and men attached to this wing generally add the prefix 'Detective' before their regular rank (for eg: Detective Inspector).
The Central Bureau of Investigation (CBI) (Hindi: केंद्रीय अन्वेषण ब्यूरो 'Kendriya Janch Bureau'), is India's premier investigating agency, responsible for a wide variety of criminal and national security matters. It was established on 1 April 1963 and evolved from the Special Police Establishment founded in 1941.
Published by Sameer for whichprofession.blogspot.com