Gary R. Schauer, 71, of Woodstock.

The sheriff’s office is seeking the public’s help in locating a 71-year-old Woodstock man who went missing in McHenry County and is considered endangered.

The Illinois State Police activated an Endangered Missing Person Advisory for Gary R. Schauer, 71, of unincorporated Woodstock.

The McHenry County Sheriff’s Office is searching for Schauer, who is described as being a white male, 6-foot-4 and weighing 270 pounds.

Schauer has gray hair and green eyes, the advisory said.

He was last seen on Wednesday driving a burgundy 2007 Dodge RAM pickup truck.

The truck has an Illinois license plate of 43239V-B.

Schauer was hauling a 2007 Holiday Rambler trailer with Illinois license plate 718200RT.

The missing person advisory said Schauer has a condition that places him in danger.

Anyone with information regarding the whereabouts of Schauer is asked to contact the McHenry County Sheriff’s Office at 815-338-2144.

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Anyone who spots Schauer should contact 911.