Grief and anger after Johannesburg blaze that killed at least 74

Mourners gather outside 80 Albert Street amid criticisms of government response and lack of support for victims and families

South African authorities were on Friday still searching for clues behind the cause of the most deadly fire in the country's history, with at least 74 people confirmed to have died and dozens more being treated in hospital.

About 400 people are thought to have lived in informal settlements in the building at 80 Albert Street in central Johannesburg, which relied on illegal electricity connections for power and had no emergency exits. It is owned by the City of Johannesburg.