UPDATE: Missing Woman Shows Up at Menlo Park Police Dept.

UPDATED WED. FEB. 13, 11:15 A.M.:

Margaret Woodman, 67, of unincorporated Redwood City, was located after going missing for approximately nine hours on Tuesday, the San Mateo County Sheriff's Office reported.

Woodman, who suffers from Alzheimer's, was last seen walking away from her doctor's office in the 100 block of Arch Street near Hopkins Avenue around 1 p.m. Tuesday. She was reported missing shortly after.

Woodman was located when she walked into the Menlo Park Police Department around 10 p.m. Tuesday, Detective Rebecca Rosenblatt of the Sheriff's Office said Wednesday.

This is the third time in three weeks Woodman has gone missing.

- Bay City News Service contributed to this report

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The San Mateo County Sheriff's Office sent out a missing persons alert Tuesday afternoon for an at-risk woman out of Redwood City.

Margaret Woodman, 67, did not return from a walk around 1 p.m. She was last seen in the 100 block of Arch Street near Hopkins in Redwood City.

This is the third time in roughly three weeks that Woodman has gone missing. Her husband said she suffers from Alzheimer's and likes to go on walks, especially around Courthouse Square downtown.

The first time Woodman went missing, last month, she was found all the way over near Stanford University.

If you see Margaret or know her where-abouts, call 9-1-1 immediately.