Here, read this:
Many people worry that if they donā??t cooperate fully with the police and answer all their questions, the officers will increase the charges against them. This is a mistaken assumption. Higher charges are more likely if you give the police additional information. And in any case, the offenses that the police choose are mere suggestions. Itā??s the prosecutor who actually decides what crimes to charge against you, based on the information in the police report. So, the less you say, the less material the prosecutor has for thinking up charges.