NEW YORK—Bernard Madoff, who was convicted for running the largest known Ponzi scheme in history, died on Wednesday in prison where he was serving a 150-year sentence, the Federal Bureau of Prisons said. He was 82. Madoff for decades presented himself as a successful and trusted Wall Street kingpin while secretly engaging in investment fraud, prompting his sentencing judge to condemn his crimes as “extraordinarily evil.” A spokeswoman for the prison bureau said Madoff’s death at the Federal Medical Center in Butner, North Carolina, about 3:30 a.m. ET was believed to be from natural causes. Madoff had been suffering from terminal kidney disease and several other medical ailments. He had been held at the Butner prison after being sentenced in June 2009 to a 150-year term for engineering a fraud estimated as high as $64.8 billion. Madoff had last year sought “compassionate release” from prison so he could die at …