Mr Brazier said police were keeping an open mind about the main offender's gender.
"It does look like a female. We are fairly confident it's a male but we haven't ruled out if the person is a female.
"There was certainly a female look about that person but the victim and bank staff, they are pretty sure he was a male - the way the person walked out and the mannerisms indicate he is a male."
The robber had handed over a note and demanded money from a teller before snatching the note up and taking off with a quantity of money. He then hopped into the stolen car with another male and the two "floored it" down Cameron Rd, according to witnesses.
Mr Brazier said police would like to hear from anyone who might have any information concerning the movements of the car, registration XD 2541, in the Waikato or Bay of Plenty areas from midday on Thursday, and anyone who recognised the offender.
If anyone thinks they might be able to help, they should call Tauranga police on (07) 577 4300 or anonymously via Crimestoppers 0800 555 111.