Fadly Nordin, secretary of the Kampung Kuala Sungai Baru Residents’ Welfare Association (KKSB), said the decision not only denied victims of their right to justice, but also raised serious questions about the transparency of the investigation.

“We urge that the findings of the investigation be reviewed and that an independent investigative body be appointed to conduct a transparent and impartial probe.

“The victims who suffered injuries, loss and damage to property, and lifelong trauma deserve clarity on the true cause of the incident and accountability from those responsible,” he said in a statement today.

Fadly said the association called on the Selangor government, as the main agency managing the disaster, to explain how housing aid was distributed.

“There must be no discrimination in the assistance given to victims. Every affected family deserves equal treatment, regardless of their location,” he said.

They also called on elected representatives, NGOs and civil society to step up and ensure justice for the affected residents.

“We urge the prime minister and relevant ministries to honour the promises made to the victims. Justice delayed is justice denied,” he said.

Selangor police chief Hussein Omar Khan said yesterday the explosion and fire were classified as NFA after investigators found no evidence of negligence or sabotage.

However, he said the case could be reopened if new evidence emerged.

The explosion on April 1 sent flames soaring over 30m high, with temperatures reaching 1,000°C. No fatalities were reported, but about 150 people sought hospital treatment.

The fire left a crater measuring 21m by 24m and 10m deep. Eighty-one houses were destroyed, 81 more were partially damaged, and 57 were affected by heat or debris.