Police have confirmed a second person received minor injuries after an apparent explosion at an industrial chemcials unit in West Thurrock, Essex this evening. Both were employees at the site.
Safety experts have declared the area safe and there was no longer any danger to the public, the force added.
The cause of the explosion is being investigated.
Essex Police have withdrawn their advice to residents to stay indoors after an explosion at a chemical plant in West Thurrock this evening.
A spokeswoman said the chemical smell had dissipated and any danger had passed.
Emergency services in Essex said they had been called to Industrial Chemicals Limited, Stoness Road, in West Thurrock.
Fire crews found there had been an explosion of chemicals in a chlorine scrubbing unit.
Essex police urged people who live around West Thurrock to stay indoors due to the chemical smell after an explosion at a factory.
– Essex police spokesman
Police are asking that anyone who lives in the area stay indoors and keeps their windows and doors closed.
There are reports of a strong chlorine smell in the area.
One man has been injured after an explosion at a chemical factory in West Thurrock, Essex, emergency services said.
Essex Fire Service said the incident had "caused a leak of caustic soda liquid."