Update, Monday, 11.10am:
The Victoria Police air wing has been involved in the search for missing 84-year-old Timboon woman Ethel McLean.
Warrnambool police Sergeant Blake Amos said the search was continuing and expanding.
He said the police air wing conducted a search in the Dunkeld, Glenthompson and Grampians area at the weekend.
"Glenthompson at 4.30pm last Thursday was the last known location of Ethel's mobile telephone," he said.
"There have been no movements on her bank accounts.
"We are concerned for her welfare and are requesting information from the public to help locate her."
Ethel, who is also known as Rosie, is believed to have left with her dog, Maltese shih tzu, in a grey Holden commodore with registration YGT-150.
Family members will be involved in a press conference at the Warrnambool police station at 2pm on Monday.
Anyone with information about Ethel or her vehicle is requested to immediately contact the Warrnambool police station on 55 60 1333.
Saturday, 10am: Police say they are very concerned for the welfare of a missing elderly Timboon woman as they widen the search area across western Victoria.
Sergeant Paul Mcgovern, of Warrnambool police, said the search now also included the Bendigo, Ballarat and Geelong areas.
"We are very concerned for her welfare. She has been recently diagnosed with a serious illness," he said.
She is believed to have left with her dog, maltese shih tzu, in a grey Holden commodore with registration YGT-150.
EARLIER: Police are seeking public assistance to help find missing Timboon 84-year-old woman Ethel McLean.
Warrnambool police Sergeant Stuart Revell said Ethel was reported missing by concerned family members last night after limited contact on Thursday afternoon.
She is believed to have left with her dog in her vehicle - a grey Holden sedan registration plate number YGT-150.
"When she was last spoken to she was believed to be in Timboon," Sergeant Revell said.
"Police and the family want to know where she is and that she's safe. Ethel's family is concerned.
"She could be heading north towards Dunkeld. Anyone with information is requested to immediately contact the Warrnambool police station on 55 60 1333."
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