New Delhi, June 3 -- National Investigation Agency (NIA) has filed an application seeking extension of period of investigation from 90 days to 180 days in a case against six Ukrainians and one US National under UAPA.

The agency said that in view of criminal conspiracy having Pan-India and trans-National linkages, further time is required to unearth the larger conspiracy.

The 90-day period prescribed for investigation under UAPA is going to expire shortly.

Accused persons, namely Matthew Aaron Van Dyke (US) and six Ukrainians, namely Hurba Petro, Slyviak Taras, Ivan Sukmanovskyi, Stefankiv Marian, Honcharuk Maksim and Kaminskyi Viktor, were arrested on March 13 at the airports of Kolkata, Lucknow and New Delhi.

The investigation agency...