US investigating Agency FBI says, Pakistan's spy agency ISI sponsors terrorism in Kashmir and it oversees terrorist groups there. The FBI has said in the first ever open acknowledgment by a US agency that Islamabad is a 'State Sponsor of Terrorism'. In a 43-page affidavit to a US court in Alexandria in a case related to the arrest of Kashmiri separatist leader , Special FBI agent Sarah Webb Linden said that the ISI's Security Directorate oversees Kashmiri militant groups. This is the first ever open acknowledgment by the United States that Pakistan is a State Sponsor of Terrorism, an argument which India has been making for long.