Sydney bank robbed in CBD heist

A man has made off with cash after threatening two tellers during a bank robbery in Sydney's CBD.

Police said the robbery occurred about 11.15am (AEDT) Wednesday at a bank on George Street in the centre of Sydney.

The thief threatened two tellers before fleeing with money, and was last seen walking down George Street.

No one was injured.

He's described as Caucasian, about 40-50 years of age, about 160cm tall, with blond hair and a medium build.

He was last seen wearing a long-sleeved yellow fluoro shirt, long, black pants with a white stripe down the side, white joggers, a black cap with a red motif on the front, and he was carrying a black bag.