(CNN) -- Country singer Kevin Sharp has died from "complications due to cancer," his mother told CNN. He was 43.
Sharp was diagnosed with cancer as a teenager. He was treated and the disease did not reoccur, but he had problems later in life because of the radiation and chemotherapy he underwent, Elaine Sharp said.
She told CNN her son died Saturday night at her home in Fair Oaks, California.
"He had a good, strong heart," she said. "He's not hurting anymore."
Sharp is perhaps best-known for his hit song, "Nobody Knows." In later years, he traveled the country as a motivational speaker, according to his website.
Specifically, he died "due to ongoing complications from past stomach surgeries and digestive issues," the site said.
It asked for people who want to make a donation in his memory to give to their local chapter of the Make-A-Wish Foundation.
Sharp was active with the organization as an adult after being on the receiving end as a youngster.
A memorial service is being planned in Nashville, Tennessee. Details were not immediately available.
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