Nick and Aaron Carter are mourning the loss of their father, Robert Carter, who died on Tuesday, May 16, at the age of 65.
The Carter brothers announced the sad news via social media on Wednesday.
"I am heartbroken to share the news that our father, Robert, passed away last night," Nick tweeted. "While we learn more about the cause of death, and begin the grieving process, we ask that our privacy be respected at this difficult time."
Nick's younger brother then shared a picture and emotional post about his dad.
"My heart is Completly [sic] shattered I'm in shock and I loved my dad so much. #RIP DADDY I Love You. This is the last pic I have my dad," Aaron tweeted with a crying emoji.
As ET noted, the Carter family just suffered another tragedy a few years back when Nick and Aaron's sister, Leslie, died at the age of 25.