Essex police urged people who live around West Thurrock to stay indoors due to the chemical smell after an explosion at a factory.
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.
More top news
The controversial procedure involved nuclear DNA from the mother, mitochondrial DNA from a donor, and the father's sperm.
The move comes amid a boycott of the paper in Liverpool due to its controversial coverage of the 1989 Hillsborough disaster.
Glasgow East MP Natalie McGarry has been charged in connection with alleged fraud offences.