Concerns for missing Roxburgh Park man

Police and family of Frank are concerned about the 81-year-old's whereabouts due to his declining health (Supplied).

The search is on for missing 81-year-old Roxburgh Park man Frank.

He was last seen in his vehicle on Moir Drive about 9am on Friday, May 20.

Frank is believed to be driving a red 2007 Ford Falcon sedan, with the registration WAB 162.

Police have released an image of Frank in the hopes it will help locate him.

He is about 170 centimetres tall, of large build with grey short hair.

The 81-year-old was last seen wearing a long sleeve grey top with a navy-blue cardigan.

Police and family are concerned about Frank due to his age, declining health and recent memory loss.

Anyone with information on his whereabouts is urged to contact Craigieburn Police Station on (03) 9303 4433.