It does depend on which country and state as different rules apply.
This happened in a serious case against me 2 years ago. The Prosecutor decided that there wasn't enough evidence to proceed, and stated to the Magistrate at the Committal Trial that they did not wish to present any evidence in the matter. At this stage, this is what is usually called a Nolle Prosse, and without any further intervention from the Magistrate the State can instigate proceedings at a later date should further evidence come to light.
In my case, the Magistrate was pretty @@** off, and stated to the Prosecutor 'in that case, these charges are now fully dismissed'. This means that you can't be tried for the same charge again, in most places.
Cheers
KK

