"Let there be no doubt. Let there be no doubt that everyone in law enforcement, local police, state police, the United States Marshals Service, ATF, FBI, are united," said U.S. Attorney Thomas DiBiagio. "We will find out who did this, and we are dedicated to bringing the person responsible for this tragedy to justice."
Authorities indicate they do not have any hot, obvious leads in the murder of Jonathan Luna, reports CBS News Correspondent Jim Stewart. Luna's car was found near the murder scene and that is being searched, but there was no immediate sign of a weapon and no word of any prior threats. However investigators suggest an obvious place for them to start is with the violent offenders that the young prosecutor helped put in jail.
The father of two had specialized in drug and violent crime cases.
He was discovered face-down in the water behind the parking lot of a well-drilling company in Lancaster County, Pa., about 70 miles from Baltimore, police said. His car was near the body, police said.
Luna was prosecuting Baltimore rapper Deon Lionnel Smith, 32, and Walter Oriley Poindexter, 28, who were accused of dealing heroin and running a violent drug ring from their Stash House Records studio. Smith recorded under the name Papi Jenkinz.
Luna and the men's defense attorneys negotiated through the afternoon Wednesday and reached a plea bargain on the drug charges at the end of the day, said U.S. District Judge William D. Quarles Jr., who presided over the case.
The two men pleaded guilty in court around noon Thursday.
Smith pleaded guilty to distribution of heroin and possession of a weapon for the purposes of drug trafficking. Poindexter pleaded guilty to distribution of heroin to a government witness. The charges against Smith carry up to 25 years in prison, and those against Poindexter carry up to 60 years.
Authorities did not say whether the case had anything to do with the slaying. Smith and Poindexter were behind bars at the time.
Luna got a phone call at his home Wednesday night and left the house about midnight, said a federal law enforcement official, speaking on condition of anonymity. His wife reported him missing, and the FBI later began looking for him.
Luna's body was found around daybreak not far from an exit on the Pennsylvania Turnpike. The judge said Luna had been stabbed and shot, but the police report only mentioned stab wounds.
Luna grew up in New York City, attended Fordham University and went on to law school at the University of North Carolina.
He was an associate at Arnold & Porter in Washington in 1993-1994. He moved on to the Federal Trade Commission from 1994 until 1997. He then worked as a prosecutor in Brooklyn before coming to Baltimore.
"He was a wonderful person, a great neighbor," said Lenny Stango. "He'd do anything for you."
Luna, who was black, was a champion of the disadvantaged, often writing letters to the editor on behalf of minorities and the poor.
In 1991, he wrote a letter to the editor of The New York Times, saying he was "offended" at the title of a recent series of articles on the Mott Haven section of the south Bronx where he grew up. The series was titled "Life at the Bottom."
Luna wrote that there were people in the neighborhood like his parents who were "struggling every day to make a life for themselves and their families in Mott Haven. My dad struggled in the restaurant business, while my mom stayed at home to raise my brother and me."
Quarles described Luna as a "wonderful young man, responsible, charming and highly intelligent. He had genuine trial skills as a lawyer and juries loved him."
Attorney General John Ashcroft called it a "tragic death."
"I express our deepest condolences to Jonathan's family, colleagues and friends," Ashcroft said. "We share his family's grief and will provide any support and assistance to help them through this difficult time."
Smith's attorney, Kenneth Ravenell, called Luna a "a good friend."
"I was kind of his mentor in many ways," Ravenell said. "He'd call me often and discuss things outside of what we did on cases."
Luna had also prosecuted cases against a man who videotaped a neighbor child as she slept in her home and against a man who plotted to burn down a home to force six Mexican men out of a neighborhood.
In another case, he tried three men involved in a violent crack distribution network in Baltimore. All the defendants entered guilty pleas.
Other federal prosecutors have been the target of violence in the past.
Assistant U.S. Attorney Thomas C. Wales was shot to death in Seattle three years ago in an unsolved murder. The search for the killer has focused on at least one of the cases he had prosecuted.
Federal prosecutor Larry Barcella, now in private practice, was the target of a thwarted murder-for-hire scheme by ex-CIA agent Ed Wilson, whom Barcella had helped put behind bars for selling weapons and explosives to Libya. Barcella lured Wilson out of hiding and into federal custody in 1982.