A video circulating social media showing an RCMP officer standing on a man’s chest during an arrest in a Manitoba First Nation has prompted a police watchdog probe.

The Independent Investigation Unit of Manitoba (IIU) confirmed it has launched an investigation into the arrest that happened Jan. 31 in Mosakahiken Cree Nation.

A portion of that arrest was captured on video and has since been shared on social media. It shows an officer standing on a man’s chest. The man, whose hands appear to be restrained behind his back, is heard yelling about his heart.

In a release, RCMP said they are aware of the video but said it shows a “small portion” of the arrest, and confirmed the IIU had been notified.