( 1 ) DELHI Special Police Establishment, commonly known as Central Bureau of investigation (CBI), is a special police force constituted under the Delhi special Police Establishment Act, 1946 (Act 25 of 1946 ). Initially, the said police force was setup by the Central Government for the purpose of investigating offences of bribery and corruption connected with the departments of the Central Government. Having regard to the useful work of this force, its sphere and jurisdiction was extended not only to the offences relating to person and property under the Indian Penal Code and various other statutes committed anywhere within the territory of the country. Over the period, CBI has emerged as one of the premier investigating agencies of the country by virtue of its track record of detecting, investigating and prosecuting some of the most important, complex and intricate criminal cases of the country. The citizens of the country and the courts regard it to be a specialized investigating agency equipped with skilled investigators and most modern and sophisticated infrastructure. In fact, the people look up to CBI for the investigation of most heinous, complex and intricat