James Gandolfini

Anthony Soprano, a waste-management consultant from Essex County, N.J., died this week.

Tony Soprano was — according to reports that aired for six years on HBO — head of the DiMeo crime family, which allegedly ran illicit drugs, untaxed alcohol, illegal sports betting and other criminal enterprises from the back of an adult entertainment venue called the Bada Bing club on Route 17 in Lodi.

Mr. Soprano denied his involvement in organized crime. He said it was a "vicious stereotype" that slurs waste-removal professionals who promote a green, healthy environment.

Actor James Gandolfini died of cardiac arrest, The Los Angeles Times reports, citing the doctor in charge of the emergency department at the hospital in Rome where the Sopranos star was admitted.

Dr. Claudio Modini told the Times that Gandolfini, 51, was already in cardiac arrest when he arrived at Policlinico Umberto I Hospital Wednesday night.

Actor James Gandolfini, 51, has died, HBO and other sources confirm. The former star of the HBO series The Sopranos was reportedly on holiday in Italy when he died. The cause of death is not yet known with certainty, but HBO says the actor may have suffered a heart attack. Other reports have indicated Gandolfini had a stroke.

Update at 8:15 p.m. ET: Confirmation From HBO:

Initial reports of Gandolfini's death were confirmed to NPR by HBO, which has released a statement: