Yes,a state police can investigate a state case.
If what you're asking is "Will the prosecution drop the case if the thief used a fake police ID" Then the answer is no, I would imagine they would add an extra charge of felony impersonation of a law enforcement officer to the charges.
The police would have to have evidince (police witness) and the will to do so, it would probable be vacated
No, not unless it was the victim themselves who reported it. In that case you would certainly know who it was.
No, "police" isn't a proper noun in this case, if I read your question correctly. It would be proper if you wrote New York Police Department or something like that.
To report a cold case in Germany you would go to the police in the town or city where the crime was committed and the police can give you instructions as to where to go for more help. However, there are many cold cases and if it of personal interest to you (family) then you may be refused the opening of the case because there may already be a heavy workload for the police with new crimes. If this is the case then ask the police (if the case has been cold for several years) where the records are kept and you may be able to obtain the information and hire a detective.
The police officer will hand it to you, or in the case of red light cameras, it would be sent to you by mail.
You can attempt to sue for anything. You would just have to find an attorney willing to take your case. You would need to prove that the police were negligent, as landowners are not guarantors of 100% crime-free property. If you have not already, it would be a good idea to file a police report to document your incident.
I believe your referring to DA as the abbreviation to District Attorney. If so then no... a case is a case and a District Attorney is the one you would find charging you with a crime and assisting the police in the investigation.
Police may take your fingerprint during a traffic stop to confirm your identity. This is done to prevent false identification and to ensure accurate information for any citations issued. Additionally, fingerprints can be used for background checks if needed.
Someone has to file a complaint. If the police saw or found evidence of a crime at this incident then they may have a case.
it can take up the case on the direction of the court, direction of the Director General Police or the Government,