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
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 five years at a federal prison in Sandstone, Minnesota during the 1990s after pleading guilty to federal racketeering charges in Hartford, Connecticut.
criminal activities and soon presided over gambling and loan sharking for the Patriarca family.
At the time, Guglielmetti served as steward for Laborers' International Union of North America (LIUNA) Local 271.
After Hemphill opened, an undercover FBI agent met with Guglielmetti
and offered him the chance to buy into the company.
According to an FBI affidavit, Guglielmetti became a silent partner in Hemphill and started taking company funds, "including a share of the profits from laundering what Guglielmetti believed were drug proceeds through the undercover business."
In 2003, Guglielmetti served as union steward for Capital City Concrete, which was chosen as a minority contractor for a $5.8 million parking ramp at the Kent County Court House in Warwick, Rhode Island.
The company was also selected for $7 million in contract work on a sewage overflow tunnel at Narragansett Bay in Rhode Island.
As work on the Warwick ramp progressed, state court officials pressed local contractors for payroll records in order to conduct criminal background checks on their employees.
Capital City was among the last contractors to comply with this request.
About a week before Guglielmetti
stopped working on the ramp, Capital City finally turned over the records.
Nothing emerged in the state files - apparently, Guglielmetti
had unspecified charges expunged.
In October 2003, Rhode Island and Massachusetts police visited the Warwick construction site to tell Guglielmetti
and Manocchio had been recorded on undercover wiretaps discussing the collection of gambling debts and the mediation of a mob dispute.
On January 20, 2005, FBI agents and Rhode Island State Police detectives raided the headquarters of Local 271 and Capital City Concrete
Earlier that day, Guglielmetti
and a pair of associates were arrested in Johnston.
On March 31, 2005, Matthew Guglielmetti
signed a plea agreement admitting that he
conspired to distribute more than five kilograms of cocaine.
Later in 2005, Guglielmetti
was sentenced to 11 years in prison.