NEW YORK (AP) — Peter Buxtun, the whistleblower who revealed that the U.S. government allowed hundreds of Black men in rural Alabama to go untreated for syphilis in what became known as the Tuskegee study, has died. He was 86.

Buxtun died May 18 of Alzheimer's disease in Rocklin, California, according to his attorney, Minna Fernan.