About 32 police officers continue to search fields and properties just outside of Barrie for any sign of a missing senior.
Mandy Thompson, who is 72 and suffers from dementia, wandered from her Laidlaw Drive home around 7:30 a.m. last Friday.
An image believed to be of Thompson walking on Penetanguishene Road near Georgian Drive around 10 a.m. was captured on the security camera of a nearby business.
The OPP added its resources to the search this week after that tip prompted Barrie Police to expand the search beyond the city limits.
Officers are on foot, snowmobiles, and are using UAV's, K9 and the OPP helicopter in a desperate bid to find Thompson.
Police have established a tip line for anyone with information or security video to call 705-725-7025 ext. 2160 or Crime Stoppers.
