however, as to the type of stains that were present and the possible cause, they did not make any determination at that time. >> under a magnifying glass, crime scene reconstructionist jerry findlay found tiny drops of blood embedded in the fabric about 1/32 of an inch in diameter. it was medium velocity impact spatter. usually the kind produced when someone is hit with a blunt object. >> medium velocity is an instrument being wielded by a human that's not going to generate that much force. >> the blood stains were clustered above the knee, indicating the assailant was kneeling as he attacked. >> so, whoever was wearing those jeans were in close proximity of impact at the time of impact. >> and dna testing confirmed, the blood on the jeans was