( CNN ) -- The death of Mark Madoff , the son of convicted Ponzi-schemer Bernard Madoff , was ruled a suicide by the New York City medical examiner 's officer on Sunday , a day after the victim 's body was discovered hanging from a ceiling pipe in his SoHo apartment . Ellen Borakove , a spokeswoman for the medical examiner , said the autopsy was completed around 1 p.m. Sunday . Borakove said medical examiners will conduct toxicology and tissue tests on the body . The result , she said , will not be made public unless Madoff 's next of kin asks for the case file . Madoff killed himself two years to the day after his father was arrested for swindling $ 50 billion from investors in the largest Ponzi-scheme in U.S. history . None of Madoff 's immediate family members have commented on his death . However , the attorney who represents the victim 's mother , Ruth , said she `` is heartbroken . '' The attorney , Peter Chavkin , responded by e-mail and said Ruth Madoff would not provide additional information . Mark Madoff killed himself while his wife was out of town and his 2-year-old son was asleep in a nearby bedroom , early Saturday morning , authorities said . Madoff 's body , fully clothed and hanging from a living room pipe , was discovered by his father-in-law around 7:30 a.m . The boy was not harmed . Mark Madoff 's attorney , Martin Flumenbaum , on Saturday called his client 's death . `` a terrible and unnecessary tragedy . '' `` Mark was an innocent victim of his father 's monstrous crime who succumbed to two years of unrelenting pressure from false accusations and innuendo , '' Flumenbaum said . `` We are all deeply saddened by this shocking turn of events . '' Bernard Madoff is currently serving a 150-year prison sentence for masterminding the largest Ponzi scheme in U.S. history . Madoff bilked investors out of $ 50 billion by masquerading his investment firm as legitimate when it was nothing more than a front . He used funds from new investors to send payments to his earlier investors , falsely portraying them as proceeds from investments , when they were actually stolen money , prosecutors said . The 71-year-old Madoff pleaded guilty to the charges in 2009 and is now incarcerated at the Butner Federal Correction Complex , a medium-security prison in eastern North Carolina . Bernard Madoff 's criminal activities have spawned a tidal wave of civil actions against Mark Madoff , his mother , siblings and hundreds of other defendants , accused of profiting off the Ponzi scheme by withdrawing more money from Madoff 's fund than they invested , money they presumably thought was investment income . A person familiar with the Madoffs says Mark Madoff has not been in touch with his extended family for the past two years . Irving Picard , the court-appointed trustee in charge of recovering and distributing Madoff 's assets , has filed a slew of lawsuits in U.S. Bankruptcy Court in Manhattan over the past week on behalf of some of Madoff 's victims . One filed on December 8 named Mark Madoff -- as well as his brother Andrew Madoff and uncle Peter Madoff -- as one of several defendants in a civil lawsuit . On Saturday , Picard issued a brief statement expressing his condolences . `` This is a tragic development , and my sympathy goes out to Mark Madoff 's family , '' he said . The other defendants include JPMorgan Chase , HSBC , UBS , an Austrian banker , and two accountants who are accused of knowing about the fraud but covering it up and profiting from it . The majority of Madoff 's victims did not invest directly in his firm . They invested in third-party feeder funds , and therefore do n't qualify for the financial protections extended to direct investors . So far , 16,394 claims have been filed by investors who say they lost money . The majority of the claims -- 13,054 , or nearly 80 % of the total -- have been denied , because the investors were invested through feeder funds . From CNN 's Miguel Susana in New York .
Mark Madoff 's death is ruled a suicide . His attorney says Madoff was `` an innocent victim of his father 's monstrous crime '' His mother is `` heartbroken , '' her attorney says . A person familiar with the Madoffs says Mark Madoff had fallen out of touch with his family .