The federal government of Pakistan have established FIA which is a federal investigation authority in Pakistan headed by Director general in federation and province. FIA have a special mandate in terms of special offence which is dealt by FIA. A schedule is given in FIA act 1974 which provides complete list of those offence in which FIA deals with. This list also includes offences under foreigners act, banking companies ordinance, Custom act, Foreign assets, Passport act, Drug act, Exit control ordinance, Human trafficking, National data base, Money laundering etc. FIA also have separate wings dealing with separate offences and each wing is specialized in their field. Normally the law is that the law enforcement agency first chalk an FIR and then investigate the matter but same is not the case with the FIA. FIA first investigate the matter then chalk an FIR and for the purpose of investigation the investigation officer of FIA send notices to the concerned party and get assistance from the other departments this is the reason that when a challan is submitted by the FIA in court it contains very few defects and the lawyer for FIA cases have to work very hard on the file.