Guglielmetti is a second-generation gangster who began his criminal career in 1984, when he and his father, Matthew L. Guglielmetti Sr. were arrested for hijacking a truckload of Canadian whisky. However, the case was later dropped. In 1989, while the Patriarca family was in the midst of an internal factional war, Guglielmetti came to the attention of law enforcement authorities when it was discovered that he had attempted to act as a peace broker. In return for his efforts, he inherited the rackets previously overseen by the murdered underboss William Grasso. On October 20, 1989, Guglielmetti was recorded by the Federal Bureau of Investigation (FBI) while the Patriarca family conducted a Mafia induction ceremony in Medford, Massachusetts. As a result, Guglielmetti ended up doing nearly fi