Is A Confidentiality Agreement Void between lawyer and suspect, if suspect dies in jail?

The suspect told of very serious information to an Public Defender, however he soon died in jail, can his information be used to stop a crime?
There are exceptions to the attorney-client privilege. It does extremity on the death of the client and information given to an attorney about intent to commit a crime in the adjectives by the client or another is not privileged under the Rules of Professional Responsibility governing attorneys.
No protection for a dead man; can't do him any harm NO, because of the reality that the suspect who told him of this vital and serious information is now dead. As a public champion, and a lawyer at that, there is no one to collaborate the nouns of the suspect anymore. The public defender cannot say that the information has be relayed to me by this someone...so and so...so when somebody ask the defender where is he now? And the lawyer(defender) will describe him 'he's now dead', and the other guy will just tell him 'forget it consent to us just gone home and drink some beer'.

Stopping crime is not the duty of the public defender, it is the duty of the cops to impose the writ not the public defender,don't you think? His information is not solid anymore, where do you assume he will get his evidence and much more his witness, the main witness he got is presently in the grave, 6 feet under.