Some do if they are certified law enfrcement officers.
Ask someone at the reference desk of your local public library for the Occupational Outlook Handbook. It lists all kinds of information you would need to know,(including the salary) of just about any occupation you can think of.
Observation
because they are Crime Scene Investigators why wouldn't they, it is their job to show who is a suspect and who is a victim/innocent.
The average salary of Criminal Scene and Forensic Investigators is about $58,000 a year in the State of California.
they are illegal
Intolerable Cruelty grossed $121,327,628 worldwide.
Salaries for fraud investigators in the US can vary based on experience, location, and company. The average yearly salary for fraud investigators in the United States is $50,000. The average annual salary for this career in Ohio is $48,000.
Maryland is one of five top states in which criminal investigators make more money. In Maryland, a criminal investigator that works for the state averages $75,390 per year. Federal criminal investigators in Maryland average $91,200 per year.
Private investigators range in prices depending on your location and how much work is required of them. You can contact a few Private Investigators in your local area and get quotes to compare prices.
Animal cruelty fines typically run from $200-$2,000 and up and possibly a year in prison.
they make about around 3-4 millon dollars a year at that it maybe much much more than thatand as grow in the field more you earn about 4-6 millon dollars a year. depending what you do in criminal investigating depends on how much you get a year.