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Mr Turner said the offender was described as a Maori woman in her mid-twenties, of solid to fat build.
She was wearing a dark blue hoodie pulled over her head and white tee shirt, blue shorts and jandals, and had a nose ring in her left nostril, and a bracelet on her left ankle.
"There appeared to be a significant amount of dried blood on the tee shirt and around the this woman's mouth," Mr Turner said.
"I believe that this woman will be known within the community, and the blood on the mouth and tee shirt indicates her potential involvement in another incident early on the same day that appears to be unreported."
Anyone with information about this assault and robbery is urged to immediately contact Tauranga police on 07 577 4300.