A request for extradition was sent to the Austrian Federal Ministry of Justice on Tuesday, Croatian Justice Ministry spokeswoman Vesna Dovranic told Hina on Thursday, adding that Croatia was now waiting for a reply.
Asner has dual Croatian and Austrian citizenship, but under the Austrian law he cannot be extradited to another country, so the outcome of the Croatian request is uncertain.
One of the possibilities is for Asner to stand trial in Austria, and according to Croatian media reports two months ago, Austrian prosecutors have launched an investigation into the case.
After the collapse of the Ustasha regime in Croatia at the end of the Second World War, Asner fled to Austria and lived peacefully there for years. He returned to Croatia in 1991, taking up residence in Daruvar.
His alleged criminal past was discovered by Alen Budaj, an amateur historian from Pozega, while he was researching the history of the Jewish community in his town.
The Croatian Public Prosecutor has initiated an investigation at the County Court in Pozega on the basis of evidence collected by Budaj and that provided by the Jerusalem-based Simon Wiesenthal Centre.
Meanwhile, Asner fled back to Austria and is now reportedly living in his son's apartment in Klagenfurt.
An international warrant for his arrest was issued in July this year following an order by the Pozega court.