The family of missing Honolulu resident Chang Ho Han is now offering a $10,000 reward leading to the return of the 70-year-old man.
Han has been missing since late January. He was last seen near Ala Moana Center.
The family has been distributing fliers and set up a Facebook page.
The retired limo driver suffers from Alzheimer's Disease and was last seen wearing a red jacket and white cap.