Hungarian prosecutors charged Laszlo Lajos Csatari, 98, on Tuesday with organising the deportation of 12,000 Jews to World War II death camps.
He topped the Simon Wiesenthal Centre's list of Nazi war crimes suspects known to be still alive and at large almost seven decades after the conflict ended.
Two other leading suspects on the list -- Alois Brunner and Aribert Heim -- are widely suspected to be dead.
The following are the nine other top names on the list, one of whom, Hans Lipschis, has been arrested since it was last updated in April.
1. Gerhard Sommer, Germany
A former German SS officer convicted in absentia in Italy in June 2005 of the massacre of 560 civilians in August, 1944. Since 2002, he has been under investigation in Germany, but no criminal charges have been brought against him, the centre says.
2. Vladimir Katriuk, Canada
Served in a Ukrainian battalion which murdered Jews and other civilians in Belarus. Moved to Canada after the war, and has lived there since. Was stripped of his Canadian citizenship in 1999, but it was reinstated in 2010.
3. Hans Lipschis, Germany
Served in the infamous SS Death's Head Battalion at the Auschwitz-Birkenau concentration camp.
Lipschis fled to the United States after World War II, but was deported to Germany in April 1983.
He was arrested on May 6, 2013 at the age of 93 on charges of complicity in mass murder, after a medical examination showed he was fit to withstand detention.
4. Ivan (John) Kalymon, United States
A member of the Nazi-controlled Ukrainian Auxiliary Police in Lviv, then in German-occupied Poland, now in Ukraine, that took part in the murder, roundup and deportation of Jews in the Lviv Ghetto.
On January 31, 2011, Kalymon was ordered deported from the United States but he remains in the country as no other government was willing to take him in.
5. Soeren Kam, Germany
An SS officer accused of taking part in the murder of an anti-Nazi newspaper publisher in Denmark. Germany, where he was naturalised in 1956, has refused to extradite him to Denmark.
6. Algimantas Dailide, Germany
He served in the Lithuanian Security Police, which arrested Jews and Poles who were later executed by the Nazis and Lithuanian collaborators.
The United States deported Dailide in 2004 and he was convicted in 2006 by a Lithuanian court and sentenced to five years in prison but remained free owing to his age.
In July 2008, Dailide was ruled medically unfit for incarceration.
7. Mikhail Gorshkow, Estonia
He served as interpreter for the Gestapo in Belarus and stands accused ot taking part in the mass murder of Jews in Slutzk.
Gorshkow fled from the United States to Estonia, where authorities closed an investigation against him in October 2011, claiming the case was one of "mistaken identity."
8. Theodor Szehinskyj, United States
Served as an SS Death's Head guard at concentration camps in Gross Rosen and Warsaw, Poland and Sachsenhausen, Germany.
He fled to the United States, but was ordered deported in 2003.
No country has agreed to take him however, and he remains in the United States.
9. Helmut Oberlander, Canada
Served in a commando unit in southern Ukraine and Crimea that is estimated to have murdered more than 23,000 people, mostly Jews.
He escaped to Canada after World War II, but was stripped of his Canadian citizenship in August 2001.
It was restored in May 2004, then revoked again in May 2007, a decision that was overturned in November 2009.
On September 27, 2012, Oberlander's citizenship was revoked again, and he is now appealing that decision.
On Friday, the Wiesenthal Centre called on US justice officials to investigate the case of Michael Karkoc, whom it identified as a 94-year-old Minnesota resident suspected of being a Ukrainian SS commander.
Karkoc arrived in the United States after the war but the SS Galician Division he is said to have served in was "responsible for brutal atrocities against civilians," the centre said.