As the search continues to locate an elderly woman with Alzheimer's in Bremer County, no volunteers are needed to help authorities today (Friday, July 8, 2016).

Sheriff's officials said they're planning to modify their search efforts to address reported sightings of Cloris Mehmen, 76, who's been missing since Tuesday morning. She was last seen wearing faded blue/gray jeans, a men's short-sleeve shirt and tan loafer-style shoes.

Mehmen is described as five-feet tall. She weights about 130 pounds.

Since Mehmen's disappearance, more than 100 searchers have combed fields, wooded areas, and waterways around Plainfield in an effort to find her. Authorities said they decided to modify their search to address the reported sightings of Mehmen after three days of walking fields and checking road ditches turned up no clues to her whereabouts.

Anyone with information on Mehmen is asked to call the Bremer County Sheriff's office at 319-352-5400, Ext. 3.