Peter Yarrow, the singer-songwriter who was one-third of the folk trio Peter, Paul and Mary, has died at age 86, his representative confirmed to ABC News.

The singer-songwriter and social activist best known as one-third of the folk-music group Peter, Paul and Mary, has died at age 86.

Peter Yarrow, one-third of the 1960s folk group Peter, Paul and Mary, died Tuesday in New York City. He was 86. Yarrow died at his home in the Upper West Side of Manhattan, The New York Times reported. His death was confirmed by his publicist, Ken Sunshine, according to the newspaper. Yarrow had been battling bladder cancer for the past four years.

LOS ANGELES (AP) — Peter Yarrow, the singer-songwriter best known as one-third of Peter, Paul and Mary, the folk music trio whose impassioned harmonies transfixed millions as they lifted their voices in favor of civil rights and against war, has died. He was 86.