The Survivor contestant Roger Sexton has died at age 76.

Sexton’s family members confirmed Thursday that he died in late October at his daughter’s home in Walla Walla, Washington, in the presence of family and caretakers following a long battle with dementia, according to TMZ.

Sexton was featured on season six of Survivor way back in 2003, which was filmed in Brazil near the Amazon River.

Lewy body dementia is the second most common form of dementia behind Alzheimer’s disease, according to the Mayo Clinic.

It occurs when protein deposits, known as Lewy bodies, begin to accumulate in nerve cells in the brain, which negatively effects both cognitive and motor abilities.

Sexton’s season of Survivor initially had the men and women divided into competing tribes, and he rose in the ranks to lead the men’s team before the groups were eventually merged when only ten contestants remained. 

Tropical: Sexton’s season of Survivor from 2003 was filmed near the Amazon River in Brazil; picured in the front row, second to right

Natural leader: Men and women were initially divided into competing tribes, and he rose to lead the men’s team before the groups were merged when only ten contestants remained; seen on Survivor

Sexton lasted an impressive 21 days in the Amazon out of the show’s 39 days, though he was voted off the show when the women’s team convinced several of the male contestants to vote against him.

His obituary states that he was born in Oakland, California, and grew up in the Bay Area before enlisting in the marines and serving in Vietnam from 1966 to 1967.

After his discharge, Sexton married Diane Rodrick in 1968, and he subsequently graduated from California Polytechnic Institute San Louis Obispo in 1971 with a Construction Management degree. He went on to become the vice president of a construction contracting company.