Warren police are looking for 22-year-old Theresa Dekeyzer.
She was last seen in the area of 9 Mile and Vandyke on Monday morning.
Dekeyzer is 5 feet 7 inches tall, weighs 130 pounds, and has brown hair and blue eyes.
She has a tattoo of a small black outline shell on her right wrist.
Anyone with information should contact the Warren Police Department at 586-574-4700.