A shotgun-wielding bank robber wished a terrified customer a Merry Christmas before taking off with about $100,000 cash.
The BNZ bank in Botany was robbed by two men carrying a gun and a screwdriver about 3.45pm on Thursday, December 16.
They stole one bulk lot of $94,000 and also several thousand American dollars.
It was the fifth time one of the bank staff had been robbed, Detective Vaughn McAllister said.
They were in the bank for several minutes - a long time for such a robbery - and one of the men wished a woman, who had a baby with her, a Merry Christmas before leaving in a stolen car, he said.
Staff and customers had done exactly the right thing in complying with the robbers' demands.
"It's very concerning because of the fact that they're using a shotgun and other weapons and are prepared to brazenly do it in the middle of the day. God knows what would have happened if someone had confronted them," Mr McAllister said.
The man carrying the screwdriver was described as slim, wearing a black balaclava, a white cloth covering his face, a black jumper with a grey stripe across the back of the shoulders, a white top underneath the jumper, white gloves on his hands and blue pants and white shoes.
The gunman was wearing a dark puffer jacket with a purple stripe down the arms and a white New Zealand emblem on the left side, a dark hooded top underneath the jacket with the hood covering his head, a black cloth covering his mouth, blue gloves and dark pants and dark shoes.
Police asked that anyone with information contact the Otara CIB on either 09 272 0912 or 0274923263 or ring Crime Stoppers anonymously on 0800 555 111.