Analysis of lab report in Zimmerman’s case – Part 2

Now, let’s take a look at the blood and DNA analyses on Zimmerman’s hand gun which was used to shoot Trayvon Martin on February 26, 2012.

The following forensic swaps were taken from Zimmerman’s weapon, handgun:

1. Grip
2. Trigger
3. Slide
4. Holster

Here are the forensic results for test of presence of blood:

1. Grip: showed positive chemical indication for blood.

2. Trigger: Not mentioned.

3. Slide: No indication for blood.

4. Holster: No indication for blood.

DNA analysis was performed on Zimmerman’s handgun. Here’s the forensic result:

1. Grip: Mixed DNA profile belonging to at least two individuals found. The major contribution originated from Zimmerman. Trayvon Martin is excluded as a contributor to this mixed DNA.

2. Trigger: result cannot be interpreted due to limited nature of DNA results.

3. Slide: result cannot be interpreted for inclusion purpose due to limited nature of DNA results.

4. Holster: Mixed DNA profile of a least three individuals found. The major DNA profile originated from Zimmerman. No determination can be made regarding the possible contribution of Trayvon Martin to the mixed DNA profile.

So, what do all these mean? Here’s my impression:

The blood evidence indicates that Zimmerman could not have been pinned down by Trayvon when the shot was fired into Trayvon’s chest. According to Zimmerman during an interview by a Sanford Police Department (SPD) investigator, while talking about Trayvon getting on top of him, he stated that:

“He was like putting all his weight on my nose and my mouth trying to suffocate me.”

Zimmerman further said:

“He was like creating a crevice with his body …”

At one point the investigator asked:

“How do you come to fire upon him in that position cause you lay now like this … on your back right?”

Zimmerman said:

“I think I went far enough to where I could make sure to pass my other hand and in his general area.”

The investigator then said:

“Right, there’s not a whole lot distance between you and him.”

Zimmerman answered: “Right.”

And the investigator said: “So you can’t fully extend your arm.”

From these we know there wasn’t a lot of room in the “crevice” between Trayvon leaning over trying to grab Zimmerman’s head for the head slamming just before the shot was fired. So, if this account is to be believed, there should be some microscopic high velocity blood splatter from Trayvon’s chest wound found on the slide of the gun and also on the right cuff, sleeve and the front of Zimmerman’s jacket. This is to be expected according to Newton’s third law of motion, that states:

“For every action there is an equal and opposite reaction.”

So, was Trayvon leaning over Zimmerman when the shot was fired? Not according to the forensic evidence.

What about the recent finding by Michael Knox, a retired Jacksonville Sheriff’s Office detective and crime scene investigator, who published some of the findings in his book, “Intermediate Range: The Forensic Evidence in the Killing of Trayvon Martin” as reported in the following link?

Knox’s conclusion states that:

“Martin was in fact leaning over Zimmerman when the fatal shot was fired, just as Zimmerman has maintained.”

Here is what the Click Orlando report stated regarding how knox came to his conclusion:

“To reach that last conclusion, Knox examined both a Florida Department of Law Enforcement report on the gunshot’s impact to the hooded sweatshirt Martin was wearing and the autopsy report describing the gunshot wound to the body.

The medical examiner determined the gunshot was fired from “intermediate range,” but the hoodie showed a “contact” shot, indicating the muzzle of Zimmerman’s gun was touching or extremely close to the fabric when the shot was fired.

Knox explained that the loose fitting sweatshirt was farther away from the body because of gravity, which pulled it down as Martin was situated above Zimmerman.

That is consistent with Zimmerman’s claim that he was on his back struggling with Martin when he reached for the gun, pointed it upward and fired, Knox said”

But the conclusion Knox came up with failed to take into consideration the SPD detective’s interview of Zimmerman regarding the postion he claimed he was placed under by Trayvon as outlined in my above discussion.

According to Zimmerman, there was not a whole lot of distance in the “crevice” between him and Trayvon for Trayvon’s loose-fitting sweatshirt to be hanging down by gravity without having Zimmerman’s gun muzzle pressing tightly back up against the sweatshirt against Trayvon’s chest.

This was noted by the SPD investigator who at one point pointed out to Zimmerman while he was describing the position he was in before the shot was fired in which the investigator said of Zimmerman’s gun: “…push into him”

So, if Zimmerman’s own account is to be believed, the forensic result for the chest wound and the sweatshirt would both be at contact range. Since the forensic evidence refute Zimmerman’s account, one possibility is that both Trayvon and Zimmerman were at an upright position, either standing or kneeling, while Trayvon’s sweatshirt was being grabbed right before the shot was fired. Another possible scenario would be for Trayvon to be laying on his back with Zimmerman leaning over him and grabbing Trayvon’s sweatshirt at the moment of firing. This scenario is supported by the blood trails from the head wounds of the back of Zimmerman’s head that flowed downward and towards the face.

Coincidentally, during the interview by SPD investigator Zimmerman had mentioned something about the firing to the effect:

“I make sure it pass my hand …I think I make sure that I wasn’t cause my hand was in the way.”

With regards to the DNA results, Trayvon’s DNA is conclusively excluded from the grip of the gun. The forensic evidence showed that there were at least two other individuals whose DNA profiles were found on the grip of the gun.

Also found were mixed DNA profiles belonging to at least three individuals in which no determination can be made regarding the possible contribution of Trayvon Martin to the mixed DNA profile. Given that Zimmerman’s holster was worn at the inside band of the back of his right hip, it is very unlikely that Trayvon would have been able to touch it when the most accessible part of the gun, the hand grip, showed no DNA profile from Trayvon.

So, who were the individuals whose DNA profiles were found on Zimmerman’s gun? Were they there the night of the shooting and were they involved in handling Zimmerman’s weapon? Did Zimmerman showed off his gun and holster to other people during other times before the fatal encounter with Trayvon? Those questions remained to be answered. Meantime, Zimmerman’s account of that night when the shot was fired did not add up according to forensic finding.


About dolphinocean

I am a college educated regular guy who was born and raised overseas but now reside in the U.S. I love nature but despise injustice.
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