Following allegations published by a leading media house in the United States, payments giant Mastercard on Sunday said that it will be reviewing its business with pornography platform Pornhub. In reply to the article published, the parent company of Pornhub, MindGeek, said that the claims made were “irresponsible and flagrantly untrue”.

“We are aware of the allegations, and we are actively engaging with the relevant financial institutions to investigate, in addition to engaging directly with the site’s parent company, MindGeek,” Associated Press quoted Visa as saying

The article, published in the New York Times, by Pulitzer Prize-winning journalist Nicholas Kristof also named Mastercard, wondering that he fails to understand why “search engines, banks or credit-card companies” bolster the website.

Kristof claimed that he found multiple videos featuring child sex abuse, “revenge porn” and rape. Substantiating his claims, Kristof wrote an “under-age” search yielded results; while not all featured children, some appeared to.

While the content uploaded on the website is largely done by its own community and is available for public viewing, the company said that every video was reviewed by human moderators and illegal content is removed.

Pornhub said it had “zero tolerance” for child sexual abuse and uses a combination of tools to remove the illegal content.

Last year, PayPal, too, had rescinded its services from the website.