A 112-year-old who survived back-breaking slave labour at Auschwitz concentration camp is officially the world's oldest man.
Polish-born Israel Kristal, who lost his wife and two children in the Holocaust, claimed the Guinness World Records title on March 11 aged 112 years and 178 days.
Receiving his certificate at his home in Haifa, Israel, Mr Kristal said he did not know "the secret for long life".
"I believe that everything is determined from above and we shall never know the reasons why," he said.
"There have been smarter, stronger and better-looking men than me who are no longer alive. All that is left for us to do is to keep on working as hard as we can and rebuild what is lost."
Mr Kristal, who was born on September 15 1903 into a Jewish Orthodox family, survived the First World War despite being separated from his parents.
He moved to Lodz in Poland in 1920, where he began work in the family confectionery business.
But following the Nazi invasion of Poland and occupation of Lodz in 1939, he and his family were moved to a ghetto.
Mr Kristal survived slave labour in Auschwitz and other concentration camps during the Holocaust, but his wife and two children were killed. When he was rescued by Allied forces in May 1945 he weighed just 37 kilograms.
In 1950, as the lone survivor of his family, he emigrated with his second wife and their son to Israel where he ran his confectionery business until his retirement.
The oldest living person in the world is American Susannah Mushatt Jones, who is 115 years and 249 days old.
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