In Newport, Rhode Island, a blast and fire with a possible ammonia leak occurred at the Pacific Seafood processing plant, reports radio station KLCC.

The threat of an ammonia leak from two tanks inside the building, which is used for ice production and seafood freezing, prompted an evacuation order for the area. Residents took shelter in safe rooms, and many businesses and tourist attractions were closed.

As a result of the incident, the building sustained significant damage. Its roof partially collapsed, and the corrugated metal walls were deformed.

Forty firefighters, along with hazardous materials specialists, were called to extinguish the blaze. The fire chief said the incident was the most severe fire in the city in the past decade.

Despite the absence of an active ammonia release threat and the reduction of the evacuation zone, smoke continues to be observed in Newport. City officials advised residents to wear masks to reduce the risk of smoke exposure.

The cause of the incident has not yet been determined. There are no injuries, and all plant employees are safe.