The body of senior FCI official PC Ram, who was killed in crossfire between ULFA militants and police, was on Friday taken to New Delhi by his kin and officials of the organisation.
Ram's body was brought to the FCI headquarters in Ulubari in Guwahati and his colleagues paid their last respects to him.
Assam's Revenue Minister Bhumidhar Barman and senior police and civil officials placed wreaths on the body.
Ram's son Pravin Gautam, who identified the body on Thursday as that of his father, refused to speak to reporters.
The FCI executive director who headed the organisation's operations in the northeast was killed at Borkapanitenga village near Guwahati on Wednesday night during a gunbattle in which two ULFA cadres were also killed.
A body, suspected to be that of Ram, was found in Anandpur village in Baksa district on June 30 and subsequently identified by Pravin and Ram's maid Junu Murmu.
After the body was taken by Pravin to New Delhi and cremated on July 2, the ULFA said Ram was still alive and in its custody.