Authorities in Newfoundland and Labrador are saying little about a disturbance at a St. John's prison.
The province's justice department says there was an altercation on Sunday involving several inmates at Her Majesty's Penitentiary.
It says some inmates suffered what are described as minor injuries and were taken to hospital as precaution.
There are no reports of injuries to staff members.
The justice department says the Royal Newfoundland Constabulary is investigating and no other details are being released.