Ontario's Special Investigations Unit needs witnesses for a woman's arrest at a Cardi B concert.

On March 31, security at TD Coliseum asked police for help removing a woman during the concert.

Police used physical force to take the woman out of the venue.

The SIU investigates police incidents with death, injury, or sexual assault, but did not give details about the woman.

The SIU is investigating a sexual assault claim.

The SIU wants witnesses with videos or photos of the incident to come forward.

The incident happened during Cardi B's tour.

Cardi B posted a video about Canadian ticket sales before the show, but it sold out by showtime.

Cardi B called Hamilton the best crowd in Canada after the show.

Report facts only.

Add Global News to your Google preferences to see more stories.

Get daily news updates from Canada and the world by email.

Stay informed with daily email updates on top news stories.