A large chemical fire broke out at a building in Port Adelaide, Australia, prompting police to seal off a wide area of the city after authorities warned of an "extremely dangerous" toxic smoke cloud. The blaze appears to involve sulphur or similar hazardous material, raising concerns for public health and safety in the surrounding suburbs.

Beyond the headline details, the article text provided does not include further specifics on casualties, the exact cause of the fire, or how long the exclusion zone is expected to remain in place. Residents and authorities in Adelaide have been urged to treat the toxic cloud warning seriously as emergency services respond to the incident.