Police said Christian Federico, 22, was last seen around 5:30 p.m. on Sunday.
Ontario Shores Centre for Mental Health Sciences is located at 700 Gordon St. in Whitby. Police said its not known where Federico was heading, and they didnt find him when they searched the area.
Federico is a white man, approximately five-feet-eight-inches tall, and 135 pounds. He has brown hair and is unshaven. He was wearing black pants, black-and-white running shoes, and a blue Nike sweatshirt when he disappeared.