02/15/2014 at 05:00 PM EST
John Henson, Muppets puppeteer and son of the late Jim and Jane Henson, died on Friday.
He was 48.
The Jim Henson Company confirmed the sad news on their Facebook page
"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.