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If you think it’s clean, it’s likely not! In this case, a dagger was seized with what appeared to be blood on it. Althou...
10/07/2026

If you think it’s clean, it’s likely not!

In this case, a dagger was seized with what appeared to be blood on it. Although it was quite clean, there were still a couple of spots that could be sampled.

Using a wet swab technique with saline a presumptive test was completed on one area. Once a positive presumptive test was achieved, the wet swab technique was again used to gather a sample from a second area to be submitted for DNA analysis.

Why a presumptive test? You don’t want to send ketchup to the forensics lab! 🍅

Would you identify this print?  Can you see both the core and delta?  Located on glass, processed with chemist gray powd...
10/04/2026

Would you identify this print?

Can you see both the core and delta?

Located on glass, processed with chemist gray powder, photographed using oblique lighting.

Anything sharp in your bag?  No man, nothing’!  Ever heard that one before!?And…there is blood on a a few items! Forensi...
09/29/2026

Anything sharp in your bag? No man, nothing’! Ever heard that one before!?

And…there is blood on a a few items! Forensic jackpot! If it’s dry, use a wet swab technique for collection of a sample for DNA processing.

Never trust an answer!

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Hollow point versus Fullmetal jacket. The difference between hollow point and full metal jacket am******on is obvious wh...
09/25/2026

Hollow point versus Fullmetal jacket.

The difference between hollow point and full metal jacket am******on is obvious when you see it.

Hollow point rounds will splay upon impact resulting in significantly more damage, stopping power, and less likelihood of passing through the target.

Full metal jacket rounds tend to maintain their shape upon entry to a target and will often pass through resulting in potential damage, injury, or death to a bystander.

Law-enforcement uses hollow point rounds in order to reduce the potential for collateral damage.

Canuck Hollow point am******on is generally more expensive than full metal jacket and as such training is usually done using FMJ am******on. Keep in mind if the target is hard such as a wall, both types of am******on will pancake!

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Alphonse Bertillon Anthropometry
09/05/2026

Alphonse Bertillon Anthropometry

Abrasion injury from a stopping incident. An obvious transfer of the footwear tread pattern has occurred. A great exampl...
09/01/2026

Abrasion injury from a stopping incident. An obvious transfer of the footwear tread pattern has occurred. A great example of a class characteristic! Although no accidentals or random characteristics are visible, you can be certain that some of the victim DNA has ended up on the footwear of the suspect. If discovered soon enough that DNA could be collected. Once collected using a consent DNA sample from the victim, a comparison can be made. The goal of this is to connect the shoe to the victim.

How would you go about collecting the DNA from the sole of the shoe?

A PUMKIN IED!?!? 🎃It’s June so why not a post about a pumpkin!  When most people see a pumpkin, they think of fall decor...
06/10/2026

A PUMKIN IED!?!? 🎃

It’s June so why not a post about a pumpkin!

When most people see a pumpkin, they think of fall decorations, Halloween, or pumpkin pie. But in explosive ordnance disposal (EOD) and emergency response work, everyday objects can sometimes be used to conceal dangerous devices.

A pumpkin can be modified and used as an Improvised Explosive Device (IED), taking advantage of its innocent appearance to avoid suspicion.

After forensics took photos from afar, the EOD team eventually deemed the pumkin safe to approach. It was determined to be a “fake” IED however it did contain a collection of nails and metal bits. The wires coming out of the top certainly raised concern!

No forensic evidence was located which would have assisted with identifying who left the pumpkin behind a building.

It was a great reminder… You never know so be careful!

Like and comment! 👍👍👍🎃🎃🎃

🎃

SCREWDRIVER PUNCTURE WOUNDSA screwdriver may be a common household or workplace tool, but when used as a weapon or invol...
06/08/2026

SCREWDRIVER PUNCTURE WOUNDS

A screwdriver may be a common household or workplace tool, but when used as a weapon or involved in an accident, it can cause significant and potentially life-threatening injuries.

What Makes Screwdriver Injuries Unique?
Unlike knives, screwdrivers have a narrow, rigid shaft that concentrates force onto a very small area. This allows them to pe*****te deeply into soft tissue, sometimes causing extensive internal damage despite a relatively small external wound.

Forensic Considerations
• Small, round, slit-like, or irregular puncture wounds may be present.
• External injuries can appear deceptively minor.
• Wound depth often exceeds expectations based on surface appearance.
• Damage to blood vessels, nerves, organs, and bone can occur.
• The shape and characteristics of the wound may provide clues about the type of screwdriver involved.

Assessing The Wounds
The limited size of the entry wound can mask serious underlying trauma. Medical imaging and careful examination are often required to determine the full extent of injury.

Reconstruction and Investigation
Forensic investigators examine:
✔ Wound morphology
✔ Direction and angle of pe*******on
✔ Number and distribution of injuries
✔ Associated tool marks or clothing damage
✔ Scene evidence and witness accounts

Understanding the mechanics of puncture wounds, and those specifically related to screwdrivers, helps investigators reconstruct events and distinguish between accidental, self-inflicted, and assault-related injuries.

Screwdrivers are typically “weapons of opportunity” however they can cause as much or more damage than expected!

Never fails…always something that grabs the attention!  Breakfast today, Stanton Manor, England…footwear impression on t...
06/03/2026

Never fails…always something that grabs the attention! Breakfast today, Stanton Manor, England…footwear impression on the window sill!

First photo…“wounds” from left to right…small dagger, hunting knife, large dagger, military style knife.  Second photo…t...
05/30/2026

First photo…“wounds” from left to right…small dagger, hunting knife, large dagger, military style knife. Second photo…the actual knives.

Note the difference between double edged and single edged weapon wounds. Using the dense foam the “wounds” are clearly different. Often the differences are equally clear when examining the skin of a stabbing victim!

At autopsy a thorough examination of stab wounds can reveal evidence of the general type of knife used in a homicide. Examining wounds can also be be very revealing in non-fatal attacks.

Connecting a weapon to a wound is an important part of any forensic investigation!

I’ve posted this one before…did the experiment in my driveway at home! One of my favs!

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