According to the FIR, some Delhi-based individuals were receiving funds from FIF operatives based abroad and were using it for terror activities.
Conflicting claims were made on Wednesday about the visit of United States Agency for International Development's Indian-origin chief Rajiv Shah to a relief camp, run by a front organisation of Jamaat-ud-Dawah, in Pakistan's flood-hit Sindh province and his handing over of aid to it.
The move comes after United States President Donald Trump accused Islamabad of giving nothing to the US but "lies and deceit" and providing "safe haven" to terrorists.
LeT commander Abdul Rehman al-Dakhil was named as a Specially Designated Global Terrorist (SDGT) by the Department of State.
Currently placed on the FATF'S 'grey list', Pakistan has been scrambling in recent months to avoid being added to a list of countries deemed non-compliant with anti-money laundering and terrorist financing regulations by the FATF.
Pakistan on Monday made it clear that there was no case against designated terrorist Hafiz Saeed, the mastermind of the 26/11 Mumbai terror attack, and he is free to roam in the country.