A defense attorney files a motion to suppress evidence related to the prosecution of a client for which an indictment was issued by a grand jury for the distribution of illegal narcotics. The attorney believes that any evidence obtained as a result of the indictment should be excluded because he was never informed of the calling of a grand jury, and the attorney is a well-known attorney on retainer for the suspected drug dealer.

Is the attorney correct that the evidence should be excluded because of a tainted grand jury process? Why or why not?