BUFFALO, N.Y. -- On Monday, Buffalo Bills Hall of Fame quarterback Jim Kelly made a sad announcement via social media: his father has passed away.

"Words cannot describe how much I loved my father and how deeply broken-hearted our entire family is right now," Kelly said via a post on Instagram. "I am the man I am today because of the man my father was every day of his life. He was an awesome example and taught me and my five brothers how to live life and represent the Kelly Family."

Words cannot possibly describe how much I loved my father and how deeply broken-hearted our entire family is right now. I am the man I am today because of the man my father was everyday of his life. He was an awesome example and taught me and my five brothers how to live life and represent the Kelly Family. Dad, I love you and miss you so much. You will forever be the man I look up to, the man I will always be proud to call my father. Give Hunter , Mom and Uncle Ed a hug from us. I LOVE YOU POPS. 👍🙏💔RIP

A post shared by Jim Kelly (@jimkelly1212) on

Information has not been provided on how Kelly's father died.

Jim Kelly, a cancer survivor, was a Buffalo Bills quarterback from 1986 to 1996. He is also well-known for starting the Hunter's Hope foundation, a non-profit that helps fund research and supports families caring for a child with Krabb Disease and related Leukodystrophies.