KNOX CO., Ind. (WTWO/WAWV) — The Knox Co. Sheriff’s Department is investigating the disappearance of 73-year-old Barbara Risch.
A statewide Silver Alert has been issued for Risch, who is believed to be in danger and could need medical assistance.

According to the Silver Alert, Risch was last seen on Thursday in Vincennes driving a white 2006 Lincoln Town Car with Indiana plate number UNX19.
Risch is described as 5 feet 3 inches tall and 120 pounds with gray hair and hazel eyes.
If you have any information regarding Risch, call the Knox County Sheriff’s Department at 812-882-7660 or call 911.