Guns N' Roses have announced that Ron "Bumblefoot" Thal's father has died. The guitarist confirmed on Twitter that his dad had been suffering from Alzheimer's.

"Thank you all for your kindness; all your kindness makes everything OK," Bumblefoot said to his fans on Twitter. "Mom will appreciate all your warm thoughts."

Bumblefoot added that he was glad to have spent time with his father over the recent Thanksgiving holiday. "He was so out of it," the guitarist wrote. "But I always knew how to make him laugh."

Bumblefoot, who released a deeply personal track devoted to his dad earlier this year, has been a member of GNR since 2006, a period that includes just one studio effort, 2008's 'Chinese Democracy.' He's continued a solo career through his main band's stops and starts, though the uncertainty of Guns N' Roses' schedule has occasionally led to moments of frustration for the guitarist. You can hear the song 'Father' above.

Our sympathy goes out to Bumblefoot and his family.