What to do and not to do when dealing with law enforcement in an investigation

Make No Statement to the Police under Any Circumstances
You may receive a call from a police officer or a detective asking you to meet with them because he wants to talk to you about a complaint that was made against you or a crime that they are investigating or something to that effect.  The detective or police officer may tell you that you are not a suspect, and that he just wants to talk. You are not under any obligation to speak with them. 
You make ask the detective or law enforcement officer if you should speak to a lawyer or bring a lawyer with you. The officer will probably respond with something along the lines of, “Why speak to a lawyer? Are you guilty of something?” You will likely believe that if you go and speak to the police you will avoid arrest. This is not the case; in fact it is just the opposite. 
What You Should Do
Do not speak with anyone. Write down the detective’s phone number, call your attorney and have your attorney speak to the detective or, give the detective your attorney’s phone number and have him call your attorney. If the detective wants to arrest you, then your attorney will schedule your surrender.
If the detective wants to arrest you but does not have enough evidence to make an arrest, and your attorney speaks to him, you will not be arrested. If you go to the station or meet with the detectives, any statement you make WILL be used against you and you could be arrested. There is no way that going to speak with them will be beneficial, whether you are guilty of a crime or not.
Why You Should Not Go to the Station or Meet With Detectives
The main reason not to go to the station or meet with detectives is that there is no way it can help you. If the detective’s intention is to arrest you, you will not be able to talk him out of doing so. Whatever you tell the detective can only be used against you and will be.
If you are contacted by police or detectives you should contact an attorney before speaking with anyone.  Remember you are not required to speak with them and doing so may incriminate you.  You are not violating any law by refusing to answer questions or speak with them about an investigation.