Vincent Pastore, a prolific actor best known for his role opposite James Gandolfini on the HBO mob drama The Sopranos, has died.

Pastore was found dead by a neighbor after the actor was not heard from in three days, Deadline reported on Saturday. He was 80.

Pastore played Salvatore “Big Pussy” Bonpensiero in all six seasons of creator David Chase’s The Sopranos, from 1999 to 2007. An enforcer for Gandolfini’s Tony Soprano, Pastore’s character was featured in 30 episodes over the run of the series, even though his character was killed off in The Sopranos’ Season 2 finale.

Bonpensiero was whacked in Episode 13 of Season 2 in 2000 for being an FBI informant by Tony, Paulie Walnuts (Tony Sirico) and Silvio (Steven Van Zandt). Pastore told Howard Stern in a 2000 interview that he knew his character’s days were limited.

“I don’t exactly know when and how we were going to do it," Pastore told Stern. "We didn’t get that script until four days before [we shot it]. David said it was hard for him to write.”

Pastore along with his fellow cast members from The Sopranos won an an Actor Award (then known as a Screen Actors Guild Award) for Outstanding Performance by an Ensemble in a Drama Series in 2000. The cast was nominated for the honor again in 2001.

Note: This is a developing story. Please refresh this page for updates.