Hammond, Ind. — Indiana State Police have issued a Silver Alert for a missing 79-year-old.

According to a press release, Dorothy Harris was last seen around 11:40 a.m. Sunday. Harris was wearing a pink scarf, black sweatshirt, black pants and black sparkly tennis shoes at the time of her disappearance.

Police described Harris as a 5-foot-7, 120-pound, gray-haired, brown-eyed woman. Investigators believe Harris may be in extreme danger and in need of medical assistance.

Harris is from Hammond, Indiana. ISP is encouraging those with information on her whereabouts to call 911 or contact the Hammond Police Department at (219) 852-6357.

This is a developing story. Check back for updates.

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