Casey Kasem Death: Hollywood Mourns 'American Top 40' Icon

Casey Kasem in 1957

Ryan Seacrest, SAG-AFTRA president Ken Howard and "Howard Stern" producer Gary Dell'Abate were among those paying tribute.

Casey Kasem, the voice of TV's Scooby-Doo and an iconic radio personality, died on Sunday. He was 82. 

Danny Deraney, publicist for daughter Kerri Kasem, confirmed the news to The Hollywood Reporter. The DJ died at 3:23 am of complications related to dementia while hospitalized at St. Anthony's Hospital in Washington. The entertainment industry mourned Kasem after the news broke, 

OBITUARY: Casey Kasem Dies at 82 

"It’s a sad day for the broadcasting community and for radio listeners around the world," radio and TV personality Ryan Seacrest said in a statement. "When I was a kid, I would listen to Casey Kasem’s AT40 show every weekend, and dream about someday becoming a radio DJ. So when decades later I took over his AT40 countdown show, it was a surreal moment. Casey had a distinctive friendly on-air voice, and he was just as affable and nice if you had the privilege to be in his company. He’ll be greatly missed by all of us."

"Casey Kasem was really the first radio guy I listened to on a regular basis," wrote Howard Stern producer Gary Dell'Abate in a column for Billboard. "He really influenced me and I have great memories of listening to him. I think all that trivia and knowledge helped me when I first started working in radio. Whenever I quote a music or chart fact on the show, Howard says, “Who do you think you are Casey Kasem?” I know he’s goofing on me but I take it as a compliment."

Ken Howard, SAG-AFTRA president said: "For many, the multitalented Casey Kasem was the voice of popular music, and his long-running countdown program brought exposure for many of his fellow union members. My deepest sympathy to his family and friends, and may we all remember him best by ‘reaching for the stars."