Marcel Pisani, who was reported missing on December 31, has still not been found, the police said on Wednesday.
The police believe Pisani was driving a Renault Captur with the registration number HBV761.
Anyone with information about his whereabouts can contact the police confidentially on 21224001 or 119 or by calling at a police station.
Pisani, who has used a wheelchair since a fall three years ago, was last seen at his home on Triq ix-Xitwa in Mosta.