Crime Scene Processing

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Crime Scene Processing

 

Gordon Graham
Category: Law Enforcement

Gordon Graham here with Today’s Tip from Lexipol. Today’s Tip is for law enforcement.

Every person who enters a scene could leave DNA, hair or fiber behind, or track it out.

Today’s tip is for law enforcement officers and it deals with crime scene processing.  

You may have heard the phrase, “Take nothing but memories. Leave nothing but footprints.” This is great advice for national park visitors, but it’s not the best advice for processing a crime scene. “Take everything. Leave nothing–not even footprints” might be a better mantra. 

 Mishandling evidence and failing to collect important evidence can get you and your department into hot water. Worse yet, it could mean that a criminal goes free.  

Here are a few reminders. Make sure that searches and evidence seizures are lawful. Consider securing a search warrant– even if you think an exception to the warrant requirement applies. If you’re not sure whether something may be evidence, collect it. Take photographs. Lots of them. Don’t forget to look at documents. Receipts, invoices, bills and other printouts might include dates or times. This could help establish where a suspect, witness or victim was at a certain time. Remember that DNA can be found in many places, including sink and shower drains, food, envelopes, and the sticky side of tape. 

Limit access to the scene. Remove everyone who doesn’t need to be there. This includes people from your own agency. Every person who enters a scene could leave DNA, hair or fiber behind, or track it out. 

Do not eat or smoke at the scene. 

Leave nothing behind. Don’t discard trash or use the restroom at the scene. When you’re done, remove all crime scene tapeequipment and supplies. 

As best you can, return the place to its pre-search condition.  

Then document, document, document.  

Now is probably your best opportunity to document the scene and collect evidence. Do it right. You might not get a second chance. 

And that’s Today’s Tip from Lexipol. Gordon Graham, signing off. 

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