Four Australian passport-holders have been named by Dubai police
A fourth Australian has been named in connection with the assassination of a senior Hamas commander in Dubai, Australian officials say.
A false passport bearing the name of Joshua Krycer was used by a suspect who provided surveillance for the the killers of Mahmoud al-Mabhouh.
The Australian government said it believed Mr Krycer's passport was duplicated, like others in the plot.
It has been reported that the real Mr Krycer lives and works in Israel.
"There is no information to suggest that Mr Krycer, as with any of the other three Australian passport-holders, was involved in any way, other than as victims of identity fraud," Australian Foreign Minister Stephen Smith said.
The real Mr Krycer is believed to work at a hospital in Jerusalem.
Interpol has added the remaining 16 people named by the Dubai police last month to its list of "red notice" arrest warrants, taking the total to 27.
Mr Mabhouh was killed on 20 January by a team of people who entered Dubai using false passports from the UK, Ireland, Germany and France.
They were supported by another group of suspects using false identification documents, who acted as lookouts and who had also visited the Gulf emirate months before, the Dubai police said.
Adam Korman, another Australian whose passport is connected to the killing, also lives in Israel.
The other Australian passport-holders were named as Bruce Joshua Daniel and Nicole Sandra McCabe.
Dubai police believe Israel's foreign intelligence service, Mossad, was behind the killing.
Australian Prime Minister Kevin Rudd has said the use of Australian passports in the killing was a "matter of the deepest concern" and that Canberra would "not be silent on the matter".