A report into a building fire that killed 76 people in South Africa last year has concluded that city authorities should be held responsible because they were aware of serious safety issues at the rundown apartment block at least four years before the blaze.

The nighttime fire at the five-story building in downtown Johannesburg on Aug. 31 was one of South Africa’s worst disasters. At least 12 children were among the dead and another 86 people were injured, with some having to leap out of windows to escape the flames.