According to reports, 36-years-old Sohail Kaskar,alias Ali Danish, is elder son of Dawood's deceased brother Noora.
If convicted Kaskar can face a maximum sentence of life in jail and a mandatory minim-um term of 25 years in prison.
Sohail and the Pakistani nationals, identified as Pirzada Hameed Chisti, alias Benny, and Abdul Wahab Chisti, alias Angel, were arrested in Spain in June 2014 on the request of the US government.
After extradition, they were taken into custody by the DEA's New York Organized Crime Drug Enforcement Strike Force.
Kaskar and two of his Pakistani associates conspired to import heroin into the US, to distribute the drug, and to support Revolutionary Armed Forces of Colombia (FARC), reported the Times of India.
The Revolutionary Armed Forces of Colombia-People's Army is a guerrilla movement involved in the continuing Colombian armed conflict since 1964.