U.S. Marshal's testimony: Ambrose’s alleged leak to mob a first for Witness Security Program
Court told not one of 8,000 witnesses has been harmed since inception in 1970
The secrecy shrouding the nation's Witness Security Program was never knowingly breached until Deputy U.S. Marshal John Ambrose allegedly leaked information that wound up in the hands of the Chicago mob, the head of the program testified Wednesday.
Since the program was launched in 1970, none of its 8,000 protected witnesses has been harmed, said Thomas Wight of the U.S. Marshals Service.
Ambrose is on trial in federal court. He's accused of telling family friend William Guide about a mob informant's secret testimony about Outfit killings.
The FBI says testimony by mob hit man Nicholas Calabrese -- whom Ambrose was guarding -- wound up in the hands of mob boss James Marcello.
The judge hearing the case, U.S. District Judge John Grady, acknowledged Wednesday he sentenced Ambrose's father, Thomas Ambrose, to prison in the Marquette 10 police corruption trial in 1983. Thomas Ambrose died behind bars.
Guide also was convicted in the case.