Twelve people were killed and nine others injured in a mass shooting at an informal settlement in Cleveland, Johannesburg, South African police reported Wednesday.

The shooting occurred late Tuesday night in the Cleveland area, which is part of the greater Johannesburg metropolitan region. Police confirmed the casualty figures but did not immediately provide details about the circumstances surrounding the incident.

The attack took place at what authorities described as an informal settlement, a term commonly used in South Africa to refer to areas where residents live in temporary structures, often lacking basic services and infrastructure.

No information was immediately available regarding potential suspects or motives behind the shooting. South African police have not released details about whether any arrests have been made in connection with the incident.

The shooting represents one of the deadlier incidents of gun violence in the Johannesburg area in recent months. South Africa has struggled with high rates of violent crime, including gun-related incidents in urban areas.