Kelley Mack, an American TV actress who appeared in AMC’s “The Walking Dead,” “9-1-1” and “Chicago Med,” died on Aug. 2. She was 33. Her family reported in a statement that Mack died in her hometown of Cincinnati after a battle with glioma of the central nervous system.

Kelley Mack, famous for her roles on "The Walking Dead" and "Chicago Med" has died of cancer at age 33. Her sister, Kathryn, announced Mack's passing Tuesday on Mack's Instagram page. Mack died Saturday according to the post.

Kelley Mack, who played Hilltop resident Addy on 'The Walking Dead' and appeared in Dr Pepper's 'Fansville' ads, dies of a rare form of cancer at age 33.