It is suspected that he was kidnapped by three Uzbeks, who fled to Turkey. 

An Israeli delegation has gone to the United Arab Emirates to conduct the investigation, and there are growing concerns that Kogan was murdered. 

Earlier, the Mossad said that an "intense" investigation had been opened after it emerged that the disappearance of Kogan, who ran the "Rimon" kosher supermarket in Dubai, was the result of a terrorist incident.