"We can confirm there has been salmonella identified from diners who went the Food Republic restaurant in Blackburn Rd on March 18," spokesman Bram Alexander told Daily Mail Australia.
However Mr Alexander could not confirm the source of the infection and was reluctant
"Investigations so far haven't found the source of the salmonella," he said.
"The tests performed of the samples hasn't found a positive result, there are a number of foods we're testing.
"There's no ongoing risk to the public - the restaurant is operating as normal as people should continue to patronize it."
Co-owner Lekkas said they had been fully transparent with the Department of Health and Human Services and Whitehorse Council, who saw that Food Republic's food handling processes met industry standards.
The groups are now looking into the cause of the salmonella outbreak, which has now been contained.
Daily Mail Australia has contacted Food Republic for comment.