Usually the case ends up with Detectives. Initially it may be the police officer (s) or constable (s) who receives the call to the scene then, if its a heavy matter, he/they may call in the D's. Following this it could the "Scientific" (CSI) guys and a whole heap of other guys may jump on the case...e.g. fingerprints folk (if they are separate from Scientific or CSI) then maybe firearms guys and many other sections including police intelligence services, or, as in some parts of the world, Special branches. Mainly initially its the Detectives.
A person who investigates a crime is called a detective or to be more specific, a homicide detective. It's the job of detectives to investigate the crime scene, interview witnesses, gather evidence, talk to CSI officers and put together a case that can be presented to the District Attorney.
Forensics is the science of investigating crimes.
A detective, a forensic pathologist, a criminal profiler etc.
Investigator /detective
investigator
Criminalist
dr
Policeman
Computer Crime Investigator is a person who investigates cyber crime
A forensic pathologist invesigates what caused a person's death. A criminal investigator investigates who caused the crime.
To the best of my knowledge the professional person who investigates a crime where it was perpetrated is called "a crime on scene investigator".
Forensic investigator :)
It could be a forensic scientist, a detective, a criminal investigation detective (CID), and many other organisations, the FBI and interpol - for example. But to keep things simple - a detective investigates a crime.
An investigator is a person that investigates suspicious claims and events.
National Geographic Investigates - 2011 Crime Lords of Tokyo was released on: USA: 14 October 2011
E Investigates Crime on Campus - 2010 TV was released on: USA: 24 February 2010 (Los Angeles, California)
A person who commits a crime is known as a criminal.
Depending on the circumstances, a person can be called an βaccessoryβ to the crime, for harboring a fugitive. The person is an accessory to a crime if the person: Conceals or destroys evidence of the crime, or Harbors or conceals the person committing the crime.
a witness
a witness