Mystery surrounds missing Melbourne elderly couple last leaving in a car park in a Lexus sedan

An urgent search is underway for an elderly Melbourne couple feared missing after they failed to attend a scheduled medical appointment.

Police hold grave concerns for Bentleigh couple Otto and Gerda, both aged 87, from the city’s south-east who have been missing for almost 24 hours.

The pair were last seen leaving a car park on Kings Way around 6.30pm on Tuesday night in their gold Lexus sedan, registration PYM-184 heading towards the city.

Concerned family members raised the alarm on Wednesday morning after Otto and Gerda failed to attend a prearranged medical appointment.

Their disappearance is out of character as the couple are usually in regular contact with family.

Police hold grave concerns for missing Bentleigh couple Gerda (left) and Otto (right)

Police hold concerns for Otto and Gerda’s welfare as both require ongoing medical treatment.

Their frantic daughter is expected to address the media at a police press conference later on Wednesday.

Otto is described as 180cm tall, medium build with balding white hair and blue eyes.

Gerda is described as 170cm tall with short curly white hair and blue eyes.