WARNING: GRAPHIC CONTENT

The NRL is investigating footage appearing to show Canterbury star Dylan Napa having sex with a woman.

The video was posted on Facebook page NRL Memes on Wednesday afternoon.

In it, a man alleged to be Queensland Origin representative Napa is shown on a bed with the woman.

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She is lying on her stomach with her head facing away from the camera.

He appears to be naked but some of the video is obscured by two laughing-face emojis.

At the start of the video, Napa looks at the camera. He leans in close to her face and appears to say: "Call me big Papi ... call me Big Papa."

The video goes for about eight seconds before the camera falls to the ground and Napa and the woman disappear from the shot.

Queensland's Dylan Napa is tackled. Photo / Photosport
Queensland's Dylan Napa is tackled. Photo / Photosport

In a statement, the Bulldogs said: "The club has today been made aware of alleged images surfacing on social media of a current player taken several years ago.

"The club has informed the NRL Integrity Unit of the matter. The club is not in a position to comment further at this time."

An NRL spokesman told the Daily Mail Australia it is aware of the video and will be investigating.

Napa won the premiership with the Roosters last year but made the move to the Bulldogs for the 2019 season.

He joined the club on a three-year deal, replacing former Bulldogs prop David Klemmer, who has moved to Newcastle.

Napa debuted for the Roosters in 2013 and before heading to Belmore, had spent his entire NRL career at the Bondi club.

He played 122 matches for the Tri-Colours, during which time he made a name for himself as one of the biggest hitting forwards in the competition.

He's played five Origins for the Maroons.

The NRL integrity unit was also involved in South Sydney star Sam Burgess' lewd photo scandal last year.

This was after a complaint was made by a woman alleging Rabbitohs players exposed themselves to her on Facebook following the Rabbitohs' victory over the Warriors at Mt Smart Stadium in May.

Burgess was cleared of any wrongdoing after the Rabbitohs completed its investigations in September.