Explanation

the preamble reads as follows:

"Whereas it is expedient to provide for the constitution of FIA for the investigation of certain offenses committed in connection with the matters concerning the Federal Government, and for matters connected therewith".

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MUST READ " RELATED Question"
FIA stands for the Federal Investigation Agency

Federal Investigation Agency as mentioned in section 3 of the FIA Act 1974. 

FIA was Codified under the Constitution of Pakistan in 1974,

FIA Formed: 13 January 1975

(FIA) has its headquarters in Islamabad.

FIA Parent agency: Ministry of Interior

Major Units: 13

ND12_8_2023