John Henson, puppeteer and son of "Muppets" creator Jim Henson, has died of a heart attack.

Henson’s family confirmed that he died on Friday of a sudden heart attack at age 48.

A statement on The Jim Henson Company Facebook page reads:

It is with great sadness that we confirm that John Henson, son of Jim and Jane Henson and brother to Lisa, Cheryl, Brian and Heather, died at age 48 of a sudden massive heart attack on Friday, February 14, while at home with his daughter. 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.