Hall of Fame football player and broadcaster Frank Gifford died in Connecticut on Sunday. He was 84.

"It is with the deepest sadness that we announce the sudden passing of our beloved husband, father and friend, Frank Gifford," the Gifford family confirmed in a statement to ET. "Frank died suddenly this beautiful Sunday morning of natural causes at his Connecticut home."

"We rejoice in the extraordinary life he was privileged to live, and we feel grateful and blessed to have been loved by such an amazing human being. We ask that our privacy be respected at this difficult time and we thank you for your prayers," they added.

Gifford, the husband of the Today show host, Kathie Lee Gifford, was born in Santa Monica, California, in 1930, and attended the University of Southern California. He played his entire NFL career with the New York Giants -- from 1952 through 1965 -- before switching gears to sportscasting. He worked at CBS and NBC and was known for being a part of the famous Monday Night Football team with Howard Cosell and Don Meredith.

Kathie Lee took to Twitter Sunday afternoon to thank friends, family and fans for their support during this difficult time. "Deeply grateful to all 4 ur outpouring of grace," she wrote. "We r steadfast in out faith & finding comfort in knowing where Frank is."

Gifford is survived by Kathie Lee and their two children, Cody and Cassidy, as well as his three children from his first marriage to Maxine Avis Ewart, Jeff, Kyle and Victoria, and five grandchildren.

Friends and celebs also took to social media to share their condolences with the entire Gifford family.