Tony Sirico, the actor known for playing mobster Peter Paul “Paulie Walnuts” Gualtieri on “The Sopranos,” died Friday, Variety confirmed with his manager. He was 79.

Sirico’s manager, Bob McGowan called him “a very loyal and great client” who “would always help people in need. He was member of the wounded warriors.”

In an Instagram post, Sirico’s “Sopranos” co-star Michael Imperioli wrote, “It pains me to say that my dear friend, colleague and partner in crime, the great TONY SIRICO has passed away today. Tony was like no one else: he was as tough, as loyal and as big hearted as anyone i’ve ever known. I was at his side through so much: through good times and bad. But mostly good. And we had a lot of laughs.

He continued, “We found a groove as Christopher and Paulie and I am proud to say I did a lot of my best and most fun work with my dear pal Tony. I will miss him forever. He is truly irreplaceable. I send love to his family, friends and his many many fans. He was beloved and will never be forgotten. Heartbroken today.”