In an interview with Japan’s public broadcaster, NHK, Yoshikubo’s younger brother said he is shocked and thinking about her safe return.
Yoshikubo’s father told the broadcaster his daughter is a doctor who once worked with him at his clinic in the town of Uto on the southern Japanese island of Kyushu.
He also said his daughter went on trips on her own.
Air, ground search underway
Staff at the Explorer Hotel, where she was staying by herself, found all of her luggage in her room three days after she was supposed to have checked out.
They called police, who found she'd missed her flight home to Japan on Sunday.
The hotel's manager, Naresh Panchalingam, said Yoshikubo was checked in from Oct. 17 to 24.
Panchalingam said her trip was organized by the tour operator Jonview Canada.
When she arrived, she inquired about northern lights viewing tours, but was told almost everything was closed for the season.
On Tuesday, Yellowknife RCMP made a plea to the public for any information about her whereabout, releasing photos that show Yoshikubo from security cameras at her hotel and in a local gift shop.
An air and ground search soon began, with help from Yellowknife Search and Rescue and the Civil Air Search and Rescue Association. In some areas, police are going door to door to find out if anyone has seen her.
“We’re using all available options to hopefully locate her as soon as possible,” RCMP Const. Elenore Sturko said yesterday.
Pink coat, pink hat
Yoshikubo, 45, was last seen walking along Yellowknife’s Highway 4 towards Jackfish Lake.
She’s described as about five feet two inches tall and about 100 pounds, with long black hair and brown eyes.
When last seen, she was wearing a pink coat, a pink hat, black pants and white shoes.
The Japanese Ministry of Foreign Affairs is in touch with the Yellowknife RCMP.
Police said all leads will be investigated.