SAN FRANCISCO (CBS SF) — An 86-year-old woman who may suffer from dementia and who is known to frequent San Francisco’s Potrero Hill neighborhood remains missing a week after she was last reported seen, a police spokesman said Friday.

Ellen Kernaghan was last seen on Oct.17 and reported missing on Thursday. She lives alone with no immediate family in the area, San Francisco police Officer Albie Esparza said.

READ MORE: San José School District Secures Vaccine for Entire Workforce

Kernaghan is a Caucasian female standing 5 feet 1 inch tall, weighing 110 pounds with gray eyes and blonde hair.

READ MORE: Golden Gate Fields Races to Make Up for Missed Vaccine Appointments

Police said she may suffer from dementia.

Anyone with information about her whereabouts should call 911 or (415) 553-0123, or may text-a-tip to TIP411 with “SFPD” at the beginning of the message.

MORE NEWS: Study Shows Stockton Universal Basic Income Experiment Led to Increased Employment

© Copyright 2014 by CBS San Francisco and Bay City News Service. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.