It's going to matter if it's state (and which state) or Federal, the type of crime committed, if the assets seized were used during the commission of the crime or were fruits of such. If we're talking about a lot of money/property, you may want buy an hour of a criminal defense atty's time who has experience in criminal forfeiture cases.
specifically search for "forfeiture of assets seized" or "guidelines on seized and forfeited property"
good luck