It turned out the stab wounds might have been from his own knife, and the blood of another was found in his car.
In March 2004, the killing was still unsolved, and the government offered a $100,000 reward for information.
The FBI Friday announced a reward of up to $100,000 for information that will help federal agents determine whether the brutal death of federal prosecutor Jonathan Luna was a homicide, suicide, or a random act of violence.
The FBI says it is pursuing all three theories in the mysterious December death, but still lacks critical information, which investigators hope can be provided by members of the public.
It was revealed today in the Baltimore Sun that the FBI turned on one of its female agents during the investigation accusing her of having an affair with Luna and then allegedly inappropriately investigating her and searching her computer, but doing an end run around the FBI Agents actually investigating the murder. Accusations of misconduct were made in both directions. The investigation was locally closed, but the allegations of misconduct by her against superiors warranted the FBI Inspector General to investigate, too.
A Department of Justice inspector general report obtained by The Sun found "credible evidence of serious misconduct" by agents from the Federal Bureau of Investigation's Baltimore division who investigated the death of federal prosecutor Jonathan P. Luna two years ago.
The previously undisclosed report gives new insight into the frenzied first days of the unsolved Luna investigation - with FBI agents delving into the private life and mysterious death of the assistant U.S. attorney discovered dead Dec. 4, 2003, with 36 stab wounds, lying in a remote Pennsylvania creek.
As investigators interviewed his former colleagues in the high-profile case, FBI agents soon turned against one of their own, asking about rumors of an affair between the female agent and Luna, the report said.
The female agent later filed an internal complaint charging that the FBI's then-acting special agent in charge of the Baltimore division, Jennifer Smith Love, improperly ordered two agents to interrogate her and approved an illegal search of her computer.
The FBI's internal investigators found that the interview cut out the very investigators assigned to lead the probe into Luna's death, focused on an FBI agent who had been ruled out as a likely suspect and caused dissention in an office under enormous pressure to find out how the federal prosecutor died, the report said.
The FBI, it was alleged, has a penchant for lenient treatment of supervisors in internal investigations, but harsh treatment of junior agents. That was the gist of the female agent's complaint. Case closed. No evidence either way.
Everybody has moved on, but Luna's murder, if it was a murder, remains unsolved. Whether it was a murder or a suicide remains undetermined.
Our government, always vigilant, investigating the private lives of its employees and officials, apparently for the prurient interest of it all, and not to resolve the murder investigation. Shades of J. Edgar Hoover. He would be proud. The FBI: investigating the sex life of one of its own rather than trying to solve a prosecutor's murder.
And so it goes.