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Great day this weekend at the LACounty Fair 1024 683 SIB Staff

Great day this weekend at the LACounty Fair

#ICYMI Great day this weekend at #LACountyFair!

Good food & Great people!

The parade during the fair featured LASD personnel, including Sheriff Alex Villanueva, and was a very special occasion. #LASD thanks every community member who came out! It wouldn’t have been the same without you. The fair runs until September 22, 2019. for more:

#ThrowbackThursday LASD Crime Lab 900 900 SIB Staff

#ThrowbackThursday LASD Crime Lab

#ThrowbackThursday Los Angeles County Sheriff’s Department Crime Lab

Los Angeles County Sheriff’s Department (#LASD) Scientific Service Bureau operates one of the largest full service crime laboratories in the United States. There are nearly 300 staff members working to provide forensic science support for all law enforcement agencies within Los Angeles County expect for LAPD.

Forensic science is any science that can be used in the legal system and crime scene investigation is a combination of science, logic and law.

At the crime scene, all potential evidence is collected. This evidence, including ballistics and firearms, latent prints, trace evidence, biological evidence, footwear and tire track evidence, digital evidence and drug evidence is examined and analyzed at the crime lab.

The firearms unit technicians utilize various resources and methods of firearms and ammunition identification and testing. These technicians are responsible for the analysis of any type of firearm and ammunition evidence by function-testing firearms, comparing bullets and cartridge cases to suspected firearms.

The device used to compare bullets is called a Comparison Microscope. It is essentially two microscopes linked together that allows the examiner to observe two objects side by side in the magnification. This device enables the examiner to compare the bullets striations caused by imperfections in the barrel of a firearm when firing a bullet.

Thanks to the rapid growth of crime TV shows like CSI, the profession of Crime Scene Investigator has been brought into the spotlight. The careers involving crime scene investigation include evidence technicians, crime scene analysts or forensic investigators. The job probably does not look like what you have seen on the TV shows, but it is an incredibly rewarding and gratifying career in the law enforcement world.

** Photo of Sergeant Howard Gavin at Crime Lab in the 1960s from

** Comparison Microscopes photo from LASD crime lab, 2019. 

Missing Monday Mary Spears
#MissingMonday: Spears 400 400 SIB Staff

#MissingMonday: Spears


Los Angeles County Sheriff’s Department’s Missing Persons Unit Investigators are asking for the public’s help locating Mary Elsie Spears

She was last seen leaving her home on the 44600 block of Fig Avenue in Lancaster, Friday, May 25, 2019, at approximately 11:00 a.m.

Ms. Spears is a female Hispanic 70 years-old, 5’1” tall, 180lbs, short gray hair, brown eyes, glasses and was wearing a beige dress with black small dots, and carrying a dark blue suitcase.

Mary suffers from dementia. Her loved ones are very worried and asking for your help locating her.

Anyone with information about this missing person is encouraged to contact the Los Angeles County Sheriff’s Department’s Missing Person Unit at (323) 890-5500.

If you prefer to provide information anonymously, you can call Crime Stoppers at (800) 222-TIPS(8477), or by using your smart phone and downloading the “P3” Tips Mobile App on Google Play or the Apple App Store, or by using the website