From
http://www.washingtonpost.com/wp-srv/politics/special/whitewater/docs/foster.htm
"When police and rescue personnel arrived at the scene, they found Mr. Foster dead with a gun in his right hand. That gun, the evidence tends to show, belonged to Mr. Foster. Gunshot residue-like material was observed on Mr. Foster's right hand in a manner consistent both with test firings of the gun and with the gun's cylinder gap. Gunshot residue was found in his mouth. DNA consistent with that of Mr. Foster was found on the gun. Blood was detected on the paper initially used to package the gun. Blood spatters were detected on the lifts from the gun. In addition, lead residue was found on the clothes worn by Mr. Foster when found at the scene. This evidence, taken together, leads to the conclusion that Mr. Foster fired this gun into his mouth. This evidence also leads to the conclusion that this shot was fired while he was wearing the clothes in which he was found. Mr. Foster's thumb was trapped in the trigger guard, and the trigger caused a noticeable indentation on the thumb, demonstrating that the gun remained in his hand after firing.
The police detected no signs of a struggle at the scene, and examination of Mr. Foster's clothes by Dr. Lee revealed no evidence of a struggle or of dragging. Nor does the evidence reveal that Mr. Foster was intoxicated or drugged.
Dr. Lee found gunshot residue in a sample of the soil from the place where Mr. Foster was found. He also found a bone chip containing DNA consistent with that of Mr. Foster in debris from the clothing. Dr. Lee observed blood-like spatter on vegetation in the photographs of the scene. Investigators found a quantity of blood under Mr. Foster's back and head when the body was turned, and Dr. Beyer, who performed the autopsy, found a large amount of blood in the body bag. In addition, the blood spatters on Mr. Foster's face had not been altered or smudged, contrary to what likely would have occurred had the body been moved and the head wrapped or cleaned. Fort Marcy Park is publicly accessible and traveled; Mr. Foster was discovered in that park in broad daylight; and no one saw Mr. Foster being carried into the park. All of this evidence, taken together, leads to the conclusion that the shot was fired by Mr. Foster where he was found in Fort Marcy Park. "