Montgomery County Police are asking for help to finding a missing 66-year-old woman who has Alzheimer's disease.

Nancy Eillen Strohmeyer last spoke with a relative via phone around 7 p.m. Wednesday. Since then, the family has not seen or heard from her.

Strohmeyer lives in the 13100 block of Millhaven Place in Germantown, Maryland. She is five feet, seven inches tall and weighs 130 pounds. She may be wearing a tan coat over a turquoise sweater, police said.

Strohmeyer's family is concerned for her safety, and says she needs medication.

Authorities are actively searching for her and have asked for a helicopter to expedite the search.

If you have any information about Strohmeyer, please call Montgomery County Police at 301-279-8000.