His first appointment as
Superintendent of police in
Poonch District, Jammu and Kashmir. Then he joined SP in
Central Bureau of Investigation (CBI),
Ernakulam. After that he served as
DIG in Jammu and Kashmir. On 19 January 2009, he was appointed as the first chief of India's
National Investigation Agency. Before that he held the post of Director General of vigilance department of
Jammu and Kashmir. He headed the operational wing of the Special Investigation Team (SIT) which found the killers of
Rajiv Gandhi in 1991. His service history also includes important cases like the
Kandahar flight hijacking,
Purulia arms drop case etc. He was working as a CBI officer in Kerala in 1983–89. At the time he investigated very important cases in Kerala police history like Polakkulam murder case, Panoor SI Soman murder case, Augustine murder case, Sujatha murder case. ==Death==