UPDATE, 3 p.m. | The Missouri State Highway Patrol has cancelled the Silver Alert for Johnson after he was located safe.
EARLIER | The Raymore Police Department has issued a Silver Alert for Clifford A. Johnson.
Johnson, 84, was last seen Thursday morning near 305 E. Mechanic Street in Harrisonville, Missouri.
He is described as 5 feet 7 inches tall with white hair and hazel eyes.
Johnson is diagnosed with dementia, hypertension and has a hearing impairment.
The department said Johnson was last seen at a Harrisonville post office, where he seemed confused and was unable to say his name.
He drives a dark red 2005 Buick LaCrosse bearing Missouri plates VB8X0B. He was last seen heading westbound on east Mechanic Street in Harrisonville.
Anyone who sees Johnson is asked to call the Raymore Police Department at 816-331-0530.