CATAWBA COUNTY, N.C. -- A Silver Alert was issued for a missing and endangered 66-year-old woman.

Mary Sue Summey was last seen in the 5500 block of NC-16 in Conover. Officials did not say the destination Summey may be heading to.

Summey is believed to be suffering from dementia or some other cognitive impairment. She is described as a white female with shoulder length brown hair and green eyes. She is listed at 5-foot-2, 170 pounds.

She was last seen wearing a gray t-shirt, blue jeans and white shoes. She was also seen wearing a black watch and medical alert bracelet.

On Monday, the Catawba County Sheriff's Office canceled the Silver Alert for Summey. No further details were provided.