SYDNEY (AP) -- Mamma mia! That's a lot of dough, even for an upscale pizzeria.

Police are looking for the owner of a suitcase "full of money" that was left at the Italian restaurant in Sydney by a mystery customer.

Ten Network television reported the suitcase left at Cafe Marco Tuesday morning contained about 1 million Australian dollars ($1 million) in 50 dollar notes.

But police will only describe the suitcase contents as "a significant amount of cash."

Detective Inspector Ian Pryde told reporters a man around 30 years old wearing surfing shorts and a singlet carried the suitcase into the cafe. He then "seemed to get spooked" and left without the money.

A cafe staff member contacted by telephone told The Associated Press she was too busy with customers to comment.