The woman, Suman Rameshaiah, left her home around 2pm.

Police say she did not take any personal belongings with her and has not been seen since.

It's believed she was wearing jeans, a black jacket and thongs.

Suman is described as being of Indian descent, 150 centimetres tall, of slim build and with long black hair.

Police are concerned for Suman as she has not contacted her family or friends in the past three days.

Anyone who sees Suman is urged to call Triple Zero (000).