Explanation:

CBI is a non-constitutional and non-statutory body and enjoys the status of an attached office to the Ministry of Personnel.

• It derives its powers from the Delhi Special Police Establishment Act (DSPE), 1946. 

• With the passage of time, requests were made by various quarters for CBI to take up investigation even in conventional crimes like assassinations, kidnappings, hijackings, crimes committed by extremists, violation of Official Secrets Act, large scale Banks and Insurance Frauds etc. and others specific cases like Bhagalpur Blindings, Bhopal Gas Tragedy etc. Since early 1980's, constitutional courts also started referring cases to CBI for enquiry/investigation on the basis of petitions filed by the aggrieved persons in cases of murders, dowry deaths, rape etc. Hence statement 1 is not correct.

• Thus, CBI has grown into a multidisciplinary investigation agency over a period of time. Today it has the following three divisions for investigation of crime:

• Anti-Corruption Division - for investigation of cases under the Prevention of Corruption Act, 1988 against Public officials and the employees of Central Government, Public Sector Undertakings, Corporations or Bodies owned or controlled by the Government of India - it is the largest division having presence almost in all the States of India.
• Economic Offences Division - for investigation of major financial scams and serious economic frauds, including crimes relating to Fake Indian Currency Notes, Bank Frauds and Cyber Crime.
• Special Crimes Division - for investigation of serious, sensational and organized crime under the Indian Penal Code and other laws on the requests of State Governments or on the orders of the Supreme Court and High Courts.

• The laws under which CBI can investigate Crime are notified by the Central Government under section 3 of the DSPE Act, 1946.

• CBI can suo-moto take up investigation of offences notified in DSPE act, only in the Union Territories.

• Taking up investigation by CBI in the boundaries of a State requires the prior consent of that State as per Section 6 of the DSPE Act.

• The Central Government can authorize CBI to investigate such a crime in a State but only with the consent of the concerned State Government.

• The Supreme Court and High Courts, however, can order CBI to investigate such a crime anywhere in the country without the consent of the State.

• CVC shall exercise superintendence over the functioning of the CBI insofar as it relates to the investigation of offences under the Prevention of Corruption Act, 1988. Hence statement 2 is correct.