Gunshot residue dots boy's clothing
Experts say evidence may have been tainted
But independent experts question the significance of both pieces of evidence.
The boy's clothing was not collected until the day after his father and a friend were shot and killed, and his skin was never tested for traces of gunshot residue. The boy, who turned 9 last month, frequently hunted with his father and could have held the box of .22-caliber cartridges or come into contact with residue at any time.
A report from the Bexar County Criminal Investigation Lab in Texas says more than three-dozen particles of lead, antimony and barium were found on a long-sleeved shirt and denim pants the boy wore the day his father and a friend were killed. Michael Martinez, a forensic scientist who analyzed the garments, concluded that the clothing may have come in contact with, or been close to, a discharged firearm.
However, the FBI and other law-enforcement agencies have stopped using gunshot-residue tests because cross-contamination and other problems can lead to dubious conclusions.
Steven Howard, a Michigan attorney and expert on shooting reconstruction, said tens of thousands of microscopic particles are expelled when a firearm is discharged. Upon learning that the St. Johns boy's clothes were collected a day after the crime - and that his skin was not tested at all - Howard criticized investigators. "Number 1, they're stupid," he said. "Number 2, they're stupid. Number 3, they're stupid. . . . This is just a case of poor police work."
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Residue controversial
Howard said gunshot residue has become controversial in the forensics world because innocent defendants can be tainted without firing a weapon, especially if they sat in a patrol car, touched a gun or were near the weapon when it was fired. The St. Johns boy was from a hunting family and had been in the room where his father died.
Police records say the boy's pants and shirt were retrieved from a relative's home the day after the slayings. Howard said he would expect to find dozens of particles under those circumstances, "even if he took the clothes and hung them in a closet."
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