Documenting the Scene

• Crime scene investigation technicians document the state of the crime scene using photography and video, as well as taking notes and measurements.
  
  

Collecting Evidence

• Evidence must be carefully collected using specific techniques that ensure the integrity of the chain of evidence.
  
  

Types of Evidence

• Crime scene technicians may collect a variety of types of evidence, including trace evidence, weapons or ballistics, bodily fluids or tissues and fingerprints.
  
  

Lab Testing

• Evidence is taken to a crime lab, where technicians perform tests, such as DNA analysis and toxicology analysis.
  
  

Autopsy

• In cases of murder, a forensic pathologist performs an autopsy of the body to determine cause of death and recover evidence, which may be sent to a crime lab for further analysis.