A marketing professor at the University of California, Berkeley has died, reportedly after being gunned down by a masked gunman while visiting Greece earlier this month.

University of California, Berkeley professor Przemyslaw Jeziorski is the man gunned down by an unknown perpetrator in Athens on Friday 4 July, with him found in the vicinity of his ex-wife's home in Agia Paraskevi.

A 43-year-old associate professor from UC Berkeley's Haas School of Business, Przemysław Jeziorski, was fatally shot in an Athens suburb, reports said.