Winnipeg city officials say they are working with police to find out who placed a hidden video camera inside a change room of a public swimming pool.

A pen-shaped video camera was hidden in a staff change room at the Seven Oaks Pool, Winnipeg city officials have confirmed. (CBC)

The spy camera, which was designed to look like a pen, was recently found in the staff change room at Seven Oaks Pool by a female swimming instructor.

A city spokesperson confirmed the discovery to CBC News on Sunday.

"We take an incident like this very seriously and note that a complaint was made to police immediately," the spokesperson stated in an email.

The swimming instructor who found the spy camera told the Winnipeg Free Press that the USB-connected device was sticking out of a feminine product disposal box.

The camera had filmed her naked as she entered and exited the shower area, said the instructor, who was not named in the newspaper article.

Other pools being checked

Winnipeg police told CBC News they have just received the complaint and are investigating.

All city pools are being checked for similar devices, said Coun. Paula Havixbeck, chair of the city's protection and community services committee.

Shiloh Lupichuk, who goes to Seven Oaks Pool with her family, said she was disturbed to hear that a camera was hidden inside a change room.

"I hope they don't have them in the bathrooms where I'm changing. Who wants to be seen naked?" she said Sunday afternoon.

Kyle Sass, whose younger brother and sister go to Seven Oaks, said the news makes him think twice about letting his siblings use the public pool.

"That's pretty gross, finding something like that in there," he said.

"It's pretty weird. If they found one in there, they could find it anywhere else."