04:00 PM PDT on Saturday, May 27, 2006

Associated Press

TACOMA, Wash. - After more than seven weeks of study, the Pierce County medical examiner's office is unable to determine how 10-year-old Adre'anna Jackson died.

The death certificate for the Tillicum girl whose body was found April 4, four months after she disappeared, will read: "Skeletal remains: Insufficient information to determine cause of death." The manner of her death, whether accidental, natural or homicide, also was undetermined.

That will make solving her disappearance more difficult.

KING

Adre'Anna Jackson, who disappeared Dec. 2, 2005, is seen in this home video taken a year earlier.

"It is significant, but it doesn't change what were doing," said Lakewood police detective Mike Zaro. "With so few remains left, we knew that it would be a long shot for him to provide us with anything."

The ruling also makes it more difficult to prosecute the case if an arrest is made.

"It's going to be a hindrance," said chief criminal deputy prosecutor Jerry Costello. "It would all depend on whether you have enough circumstantial evidence to convince a jury that a homicide happened."

In making the cause of death ruling, Dr. John Howard reviewed a report from a forensic anthropologist, which he received earlier this week. The report was not made public.

State and federal forensics experts continue to analyze hundreds of items taken from the girl's home near Portland Avenue and Wadsworth Street Southwest and the vacant lot where she was found.

Dozens of technicians spent 10 days on their hands and knees, collecting evidence from the lot, including cigarette butts, empty soda cans and other trash.

The Washington State Patrol Crime Laboratory is analyzing some of that evidence, but most of it has been turned over to FBI forensics technicians, said Kevin Jones, manager of the Tacoma lab.

"We have been helping them forensically and investigatively from the outset," said Robbie Burroughs, spokeswoman for the FBIs Seattle office. "We are doing whatever they are asking us to do to assist them."

Lakewood police continue to investigate the death of the Tillicum fourth grader and officials said lead continue to come in.

No arrests have been made, and no suspects have been identified.

Prosecutor Costello said that to file charges of murder or manslaughter, prosecutors would need proof that a homicide occurred. Circumstantial evidence and witness testimony would be key.

"It remains possible because the M.E.'s opinion, while powerful evidence, is not the only evidence in a case," Costello said, referring to the medical examiner. "It could be proven with circumstantial evidence. It all depends on how it develops and the strength of the evidence."

Authorities are offering up to $60,000 for information leading to arrests, criminal charges and convictions in the girl's death.

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Editors: Anyone with information is asked to call Tacoma-Pierce County Crime Stoppers at 253-591-5959.