The threat letters, first surfacing on the internet in August, carried the name of the United Liberation Council (ULC) and listed personal details of Kashmiri Pandit government employees in Jammu and Kashmir.
Baramulla Police detained Handoo in Faridabad, booking him under sections 66F and 84C of the Information Technology Act for alleged involvement in the online circulation.
Hundreds of employees recruited under the Prime Minister’s special employment package were placed on administrative leave and advised to stay away from their workplaces for nearly three weeks, according to police.
The move has raised alarms among the Kashmiri Pandit community, with leaders calling for stronger protective measures for public servants.
Police have filed formal charges and intend to present the case in the Srinagar cyber court next month.