Yes they do. Even if everyone knows that it was a suicide, the police still have to investigate to prove that no "foul play" occurred.
investigate complaints, interview witnesses and prepare cases for court
The Department of Child and Protective Services in Texas will often investigate cases of abuse and neglect involving children. They will investigate the well being and safety of the child.
If its just asking like 10 or 15 questions they are qualifed to kind of investigate. But detectives are specificly made to solve crimes and investigate cases.
Investigate and report on cases involving discrimination. I am almost positive.
One can check with a local law firm that specializes in criminal law to find an attorney that works cases involving police brutality. When a police officer steps outside the bounds of their authority and violates the civil rights of a citizen an attorney should be sought and retained.
It has been in some cases.
Citizens calling the police to report the crime or a police patrol unit responding to evidence of a crime in progress.
looks like someone nervous....
You are free to investigate anything you like.
It is the power to arrest the people breaking the laws. Driving when drunk is an offence under negligence and the police can arrest someone.
Federal cases involving citizens of different states are called "diversity" cases if that is the claimed basis for Federal court jurisdiction.
Courts that hear cases involving young people are known as juvenile courts.