MONTREAL — A Canadian oil-services company apologized Monday after an outcry over a sticker that showed their logo under a sexualized image targeting Swedish teen climate activist Greta Thunberg.

The image, shared widely on social media last week, shows a black-and-white drawing of a naked woman with her back turned, 2 hands pulling on her braids -- an apparent reference to 17-year-old Thunberg's signature hairstyle.

The word "Greta" and X-Site Energy Services's logo appear underneath the illustration.

The oil and gas services provider released a statement apologizing for the image and promising to "do better."

Canadian media said the Alberta-based company initially denied involvement in the sticker.

"We deeply regret the pain we may have caused," the statement said. "Explicit images and personal attacks on anyone are unacceptable."

Thunberg has inspired millions of young people around the world by spearheading a movement since 2018 to demonstrate on Fridays in frustration at government efforts to tackle climate change.

But she has been criticized and abused for her uncompromising attitude.

"They are starting to get more and more desperate," Thunberg tweeted on Saturday about detractors of her movement. "This shows that we're winning."

X-Site Energy Services said it was working to remove the decals from circulation and asked others to stop sharing the image. It also said it plans to train employees to follow a new "code of conduct."

"Just as we are committed to help reduce our industry's environmental footprint, we are committed to learn from and correct our mistake," the firm said.

Alberta Premier Jason Kenney called the image "odious."

Last September Thunberg marched in Montreal with nearly half a million supporters including Prime Minister Justin Trudeau.

She rallied with thousands more the following month in oil-rich Alberta.

© Agence France-Presse