RIVERDALE, Ga -- A Mattie’s Call has been issued for a missing 30-year-old man who has been diagnosed with schizophrenia and bipolar disorder.

Christopher Capparell is thought to be traveling without his medication.

Capparell was last seen on May 20, 2017, around 8 pm, leaving Holly Tree Townhomes in a taxi cab which was supposed to take him to a local area hospital for treatment. He never arrived at his destination.

Capparell is described as a 30-year-old white male who is five feet three inches tall, weighs 200 pounds and has black hair and brown eyes.