Three organisations have flagged a series of unresolved governance, regulatory, and safety concerns one year after the Putra Heights gas pipeline explosion, despite an official finding that the incident required no further action.

On April 1 last year, an explosion and fire along the Peninsular Gas Utilisation (PGU) Phase II high-pressure pipeline in Putra Heights, Selangor, sent a flame column estimated at 20 to 30 storeys high into the air...