John Henson, Muppets Puppeteer, Dies at 48
02/15/2014 AT 05:45 PM EST
He was 48.
The Jim Henson Company confirmed the sad news on their Facebook page Saturday.
"It is with great sadness that we confirm that John Henson … died at age 48 of a sudden massive heart attack … while at home with his daughter," read the statement.
"John served as a shareholder and board member of The Jim Henson Company. He leaves two daughters, Katrina (15) and Sydney (10) and his wife Gyongyi. A private service is being planned."
According to Variety, Jim Henson's youngest son performed as the nine-foot-tall ogre Sweetums for many years.
John's mother, Jane, helped create the Muppets and passed away last spring. Jim Henson died in 1990.