Jonathan P. Luna is believed to have driven this car

Jonathan P. Luna is believed to have driven this car, his silver Honda Accord, from Baltimore to Lancaster County early last Thursday. Authorities are hoping someone who noticed it then will be able to provide more information. (FBI / December 8, 2003)

Authorities working to solve the mysterious slaying of a Baltimore federal prosecutor are examining his personal relationships with women and possible financial and work-related problems, a law enforcement official said yesterday.

At the time of his death, Jonathan P. Luna had about $25,000 in credit card debt, the official said.

Other sources said Luna, 38, had expressed concern in recent weeks that he had fallen out of favor with his supervisors at work and might have to change jobs - a notion Maryland U.S. Attorney Thomas M. DiBiagio flatly denied last night.

The law enforcement official, who spoke on the condition of anonymity, said federal agents also were reviewing adult pornographic files found on Luna's Justice Department computer that appeared unrelated to his caseload, which had included the prosecution of online child pornography and predators.

As authorities were compiling extensive information about Luna's personal life and his final hours, they continued searching for a suspect in his killing.

Top officials who met yesterday to discuss the case said in a statement that the FBI, U.S. Marshals Service and Pennsylvania State Police would continue to jointly investigate and that no jurisdictional decisions are possible "until all the facts and circumstances are known."

Law enforcement sources had indicated over the weekend that the investigation likely would be handled as a local murder case in Lancaster County, Pa., where Luna's body was found shortly before dawn Thursday.

He had been stabbed 36 times, beaten and left face down in a shallow creek. Among Luna's wounds were injuries to his genital area, law enforcement sources have said.

Investigators believe that Luna's death was the result of a personal relationship that turned violent, not a random crime or in retaliation for his work - reducing the likelihood that his death would be prosecuted as a federal crime.

But the case remains a sensitive and painful one for federal prosecutors in Baltimore.

At the downtown courthouse yesterday, many employees from the office wore black ribbons on their lapels; flags outside the building flew at half-staff.

"The investigating agencies and prosecutors' offices continue to work jointly to find the person or persons responsible for this crime," DiBiagio and Lancaster County District Attorney Donald R. Totaro said in a statement.

Both prosecutors have declined to comment further on the investigation. But last night DiBiagio rejected any suggestion that Luna had been at risk of being fired.

"His job was not in jeopardy in any respect," DiBiagio said.

He said Luna's prosecution earlier this year of a rare pornography-production case was recognized by the office as "one of the most significant prosecutions of 2003."

DiBiagio also said Luna had expressed no concerns about his job security at an employee review meeting in June and had no reason to: None of Luna's supervisors "ever indicated we should take any ... action against him."

Luna, a married father of two who joined the federal prosecutor's office four years ago, was stylish and energetic and showed promise as a young lawyer.

The Bronx, N.Y., native and graduate of the University of North Carolina law school had previously worked as an assistant district attorney in Brooklyn, N.Y., and served as a staff attorney at the Federal Trade Commission. He was an associate at the Washington law firm of Arnold and Porter in 1993 and 1994.

Luna's parents, Paul D. and Rosezella Luna, have said they believe his death was related to his work prosecuting violent criminals and have steadfastly rejected suggestions that he had affairs or money problems.