Police in Colonie are looking for a missing vulnerable adult.

Gary Washburn, 23, has autism and may be suicidal and in need of medical attention, investigators said.

He was last seen driving a 2007 gray Saab 9-7x with NY license plate LDR-7080.

He was wearing a navy blue hooded sweatshirt, dark sweatpants, and white sneakers.

Police think he may have traveled to Connecticut.

Anyone with information can call 1-800-346-3543.