While a Lancaster County, Pa., coroner ruled Luna's death a homicide, other law enforcement sources familiar with the probe raised the question of suicide, noting Luna's knife found at the scene, his substantial credit card debt and his failure to take a polygraph test for an internal investigation into $36,000 missing from a drug case he prosecuted.
The FBI appears to a long-term crime promblem.
http://articles.baltimoresun.com/2006-05-13/news/0605130104_1_fbi-agents-special-agent-luna