Country singer Scotty Mccreery is mourning the death of his grandfather.

The former American Idol winner took to to share the sad news that his grandfather passed away unexpectedly on Sunday (11Jan15), at the age of 86.

In a message on the social media site, he writes, "My Granddad was a hard worker who spent 20 years in the US Air Force Strategic Air Command and 10 more years working for the US Civil Service at the Portsmouth Naval Shipyard in Kittery, Maine. He lived life to the fullest, was good-natured and had a hearty laugh.

"He was totally devoted to my Grandmother Paquita for 57 years. Together, they raised three children and were inspirations for their six grandchildren. He was one amazing guy... As his only grandson, it will be an honor to carry on the family name. Thank you Granddad for everything, but especially the lessons on love and respect, the golf and diving lessons And that MCCreery deep voice."