UPDATE: Dianna has been found safe and well.
EARLIER: Police are appealing for public assistance to help locate missing Rochester woman Dianne Ingwersen.
The 51-year-old was last seen Monday morning outside an address on Powell Street West in Ocean Grove at 7am.
Police have concerns for her welfare as she suffers from a medical condition which requires regular medication.
Dianne is known to frequent the Cheltenham, Noble Park and Blackrock areas.
Police have also released an image of Dianne in the hope someone recognises her and can provide information regarding her current whereabouts.
Anyone who sights Dianne or may have knowledge of her whereabouts is asked to contact the Echuca Police Station on 5483 1500.