A Rimouski woman who went missing last Tuesday withdrew a large amount of money on the day she disappeared, and police are considering the possibility that her absence is voluntary.

Karine Major, 26, left her home in Rimouski May 9 to go work in Amqui, about 100 kilometres east of where she lives, but never returned home.

Family members called Major's workplace and were told she never showed up that day, said SQ Sgt. Claude Doiron.

They reported her missing that night.

Karine Major's cell phone was used in Cacouna, about 100 kilometres southwest of her Rimouski home. (Radio-Canada) Major was last seen using a bank machine in Rimouski last Tuesday, Doiron said.

Late last week, police received information that a cell phone tower in Cacouna, about 100 kilometres southwest of Rimouski, had picked up a signal from her phone.

On Monday, police established a command post in the town of Cacouna in search of new leads.

"One of the hypotheses that we're considering is that maybe, and I repeat maybe, Major, for her own reasons, wanted to step away from her life, take a break," Doiron said.

However, the possibility that she was the victim of a criminal act is not being discounted, Doiron added.

On Monday, her partner, Alexandre Livernoche, issued an appeal to Major.

"We want to see her again. We're ready to do whatever it takes. We'll listen," he said.

'Mysterious' disappearance

An SQ helicopter was deployed to do a flyover in the area to see if they could spot the red 2015 Nissan Micra, licence plate K23 GZY, Major was driving at the time of her disappearance.

Doiron said police decided to set up the command post Monday as another way to gather information in the "mysterious" disappearance.

Disparition de Karine Major : le poste de commandement de la Sûreté du Québec sera à Cacouna jusqu'à 16h <a href="https://twitter.com/hashtag/icibsl?src=hash">#icibsl</a> <a href="https://t.co/xEo6u17XKy">pic.twitter.com/xEo6u17XKy</a> —@Bergeronp The command post will be at the Cacouna cathedral until 4 p.m. Even the most seemingly insignificant detail could helpful to investigators, Doiron said.

Those with information on Major's whereabouts are being asked to contact police at 1-800-659-4264.

Doiron said police have have received some tips, but none have panned out.