<p class="title">A 79-year-old man murdered at least 50 people, making him the most prolific serial killer in US history, the FBI said Sunday.</p>.<p class="bodytext">Samuel Little confessed to 93 homicides — mostly of women — between 1970 and 2005, the Federal Bureau of Investigation said.</p>.<p class="bodytext">Although investigators have only confirmed his involvement in 50 of them, they believe all of Little's confessions are credible.</p>.<p class="bodytext">The FBI has set up a website showing his videotaped recollections of unidentified killings, alongside sketches — drawn by Little — of the people he claims to have murdered.</p>.<p class="bodytext">"Many of his victims' deaths, however, were originally ruled overdoses or attributed to accidental or undetermined causes. Some bodies were never found," the FBI wrote on the website.</p>.<p class="bodytext">He was jailed for life in 2014 after being convicted of three murders.</p>.<p class="bodytext">"For many years, Samuel Little believed he would not be caught because he thought no one was accounting for his victims," FBI crime analyst Christie Palazzolo said.</p>.<p class="bodytext">"Even though he is already in prison, the FBI believes it is important to seek justice for each victim -- to close every case possible."</p>.<p class="bodytext">The former boxer, also known as Samuel McDowell, was first arrested in 2012 at a homeless shelter in Kentucky and extradited to California to face drug charges.</p>.<p class="bodytext">Once there, DNA evidence linked him to three cold cases, leading to his 2014 conviction for the murder of three women in Los Angeles between 1987 and 1989.</p>.<p class="bodytext">All three had been beaten and strangled.</p>
<p class="title">A 79-year-old man murdered at least 50 people, making him the most prolific serial killer in US history, the FBI said Sunday.</p>.<p class="bodytext">Samuel Little confessed to 93 homicides — mostly of women — between 1970 and 2005, the Federal Bureau of Investigation said.</p>.<p class="bodytext">Although investigators have only confirmed his involvement in 50 of them, they believe all of Little's confessions are credible.</p>.<p class="bodytext">The FBI has set up a website showing his videotaped recollections of unidentified killings, alongside sketches — drawn by Little — of the people he claims to have murdered.</p>.<p class="bodytext">"Many of his victims' deaths, however, were originally ruled overdoses or attributed to accidental or undetermined causes. Some bodies were never found," the FBI wrote on the website.</p>.<p class="bodytext">He was jailed for life in 2014 after being convicted of three murders.</p>.<p class="bodytext">"For many years, Samuel Little believed he would not be caught because he thought no one was accounting for his victims," FBI crime analyst Christie Palazzolo said.</p>.<p class="bodytext">"Even though he is already in prison, the FBI believes it is important to seek justice for each victim -- to close every case possible."</p>.<p class="bodytext">The former boxer, also known as Samuel McDowell, was first arrested in 2012 at a homeless shelter in Kentucky and extradited to California to face drug charges.</p>.<p class="bodytext">Once there, DNA evidence linked him to three cold cases, leading to his 2014 conviction for the murder of three women in Los Angeles between 1987 and 1989.</p>.<p class="bodytext">All three had been beaten and strangled.</p>