The matter was resolved after discussions between the two sides.
India believes that Rana, Shazia and others have a lot of information and through their interrogations more light may be thrown on the conspiracy hatched to carry out the worst terrorist strike in India and role of those behind it.
Headley had pleaded guilty to 12 terrorism charges, including his involvement in the November 2008 terrorist attacks in Mumbai. He had, however, entered into plea bargain with US authorities.
The focus of NIA team's visit to the US was to gather more details about Canadian-Pakistani Rana, who has been sentenced to 14 years imprisonment for his involvement in the conspiracy to provide material support to a terrorist plot in Denmark and giving material support to Pakistan-based terror outfit Lashkar-e-Taiba (LeT).
Rana was convicted for conspiracy to provide material support to a plot from October 2008 to October 2009 to commit murder in Denmark, including a horrific plan to behead employees of Morgenavisen Jyllands-Posten, a Danish newspaper, and throw their heads on to the street in Copenhagen, as well as giving material support, from late 2005 to October 2009, to LeT.
However, the American court could not find any evidence against him for his role in the Mumbai attacks. NIA named him as an accused in the conspiracy behind the attacks as he had visited India ahead of the Mumbai strikes and had also provided a cover of an immigration office to Headley in Mumbai.
The NIA team's visit was to gain more information about Rana so that an extradition request could be processed.