The top human rights court in the Americas found Brazil guilty of violating victims’ rights in a deadly 1998 explosion at a fireworks factory, ordering an overhaul of safety policies at pyrotechnic plants, experts said on Wednesday.

The ruling by the Inter-American Court of Human Rights, made public on Monday, said the government failed to take any measures to inspect the factory prior to the explosion, considered the worst fireworks accident in Brazilian history.

The 1998 blast in Santo Antonio de Jesus, in the northeastern state of Bahia, killed 64 people.