Bob McGrath, one of the original actors of "Sesame Street," has died at the age of 90.

The sad news was announced Sunday by a family member of the actor on his Facebook page.

"Hello Facebook friends, the McGrath family has some sad news to share. Our father Bob McGrath, passed away today. He died peacefully at home, surrounded by his family," the post read.

The actor died at his home in New Jersey on Sunday, Variety reported.

Many celebrities and fans expressed their condolences to the family of the late actor.

"Jump Street" actress Holly Robinson Peete tweeted, "My heart is broken that we've lost Bob McGrath ..Rest In Peace, Bob!"

"Bob McGrath, one of the nicest people in the Sesame Street neighbourhood, has died at the age of 90. He was 1 of the original 4 non-Muppet cast members that we met each day when the show started in 1969, and he will be sadly missed," music publicist and online radio host Eric Alper said.

"He lived to be 90, that is a good, long life but maaan... losing the heroes of my childhood still hurts every time," Emmy Award nominee Yvette Nicole Brown noted.

"So sad," one fan wrote. "RIP Bob McGrath. You will be missed by millions," another said.

"A wonderful icon of my childhood. May his memory be a blessing. My condolences to Liam, Rob and family," one person wrote.

"I am so very sorry. I am almost 60 years old, and I remember how much I loved watching him on 'Sesame Street.' In fact, I learned the song ''Good Morning, Starshine'' from him, and whenever I hear the song, I think of him. He was my favorite on the program, and he will be in my memories forever. He was a kind man, something I discovered while we were friends here on Facebook. I will cherish his friendship, too. RIP, Mr. McGrath," one post read.

Sesame Workshop, which was behind the iconic children's show, mourned the death of the "beloved member of the Sesame Street family."

"Bob embodied the melodies of Sesame Street like no one else, and his performances brought joy and wonder to generations of children around the world, whether teaching them the ABCs, the people in their neighborhood, or the simple joy of feeling music in their hearts," it said in a statement to Variety. "A revered performer worldwide, Bob's rich tenor filled airwaves and concert halls from Las Vegas to Saskatchewan to Tokyo many times over. We will be forever grateful for his many years of passionate creative contributions to Sesame Street and honored that he shared so much of his life with us."

"Sesame Street" introduces new muppet named Julia, who has autism, March 20, 2017. Reuters