Attempted Sydney bank thief caught on CCTV

CCTV footage has been released of a man wanted by police after he attempted to rob a Sydney bank on Friday before fleeing empty handed.

The man, armed with a knife, entered the Commonwealth Bank on the corner of Market Street and Castlereagh Street in Sydney CBD about 1.35pm on February 12 and threatened staff and customers, demanding money.

No one was injured but police are looking for a man depicted in the footage as Caucasian, aged in his mid-30s and wearing dark clothing including sunglasses and a hat.