(CNN)Tony Hawk's mother, Nancy Elizabeth Hawk, has died after a long battle with Alzheimer's Disease.
The retired professional skateboarder made the announcement on Facebook on Monday.
"My mom died peacefully this afternoon after a decade-long battle with Alzheimer's and Dementia," he wrote. "We watched helplessly as she slid away -- mentally and physically -- in rapid decline over the last few years. With each visit it became less likely that there would be any signs of recognition."