FACTBOX:Simon Weisenthal's top ten WW2 war criminals

(Reuters) - An alleged World War Two war criminal living in Australia is eligible for extradition to Hungary to face justice, an Australian court ruled on Wednesday.

Charles Zentai, 86, who ranks seventh on a list of the 10 most-wanted war criminals compiled by the Los Angeles-based Simon Wiesenthal Centre, has been under investigation since 2005.

Here are some details about the 10 accused.

1. Dr. Aribert Heim

-- A doctor with Adolf Hitler's SS, Heim, known as Dr Death, removed organs from victims without anesthetic; he killed hundreds at the Mauthausen concentration camp in Austria with injections of poison or gasoline straight to the heart.

-- On the run since 1962; his family says he died in 1993. Investigators say he may be in Chilean or Argentine Patagonia.

2. Ivan Demjanjuk, U.S.

-- Accused in 1977 of being the infamous "Ivan the Terrible", a Treblinka extermination camp guard, he was extradited to Israel and sentenced to death, then freed on subsequent evidence.

-- Returning to the United States in 1993, his citizenship was revoked in 2002, as a court ruled that even if he was not "Ivan" ample evidence proved the Ukraine native was a guard in three SS camps.

3. Dr. Sandor Kepiro, Hungary

-- Kepiro was in a Hungarian gendarme unit that raided partisan forces in occupied Serbia, and was accused of taking part in the killing of more than 1,000 civilians in January 1942.

-- Sentenced to 10 years in jail in 1944; both that verdict, and his acquittal later the same year, came when Hungary was under fascist rule and an ally of Nazi Germany.

-- In 2007 a Hungarian court ruled the then 93-year-old could not be investigated as his murder conviction had been overturned.

4. Milivoj Asner, Austria

-- Alleged to have been a senior security official during the 1941-45 rule of Croatia's pro-Nazi Ustasha regime, Asner says he ordered wartime deportations of Jews and Serbs to their homelands, not to death camps in Croatia.

-- Taking Austrian citizenship after the war, he was found living in Croatia in 2005, and subsequently returned to Austria, which has rejected a Croatian extradition request.