A transnational conspiracy case linking India and the United States moved a step forward as an accused participant admitted guilt in a failed contract killing planned in New York.
The final decision on his extradition is in the hands of Czech Republic Justice Minister Pavel Blazek.
The US said that it will provide the requested information to Gupta only after he appears in the court.
The US watchdog also mentioned Canadian allegations of India's role in the extra-judicial killing of Hardeep Singh Nijjar.
The US indictment has described the Indian government official as CC-1, who introduced himself to Nikhil Gupta as "senior field officer".
India and Canada are currently involved in a major diplomatic row over the killing of 'Khalistan' supporter Hardeep Singh Nijjar in June.
US on Wednesday charged Nikhil Gupta, an Indian national with plotting to kill an American Sikh extremist.
The US has claimed that it thwarted an assassination plot of an American Sikh separatist.
The US has alleged that the charged individual was directed by an Indian government employee.
The White House said that India "expressed surprise and concern" and "stated that activity of this nature was not their policy."
