A British woman has died, days after being exposed to a nerve agent close to a city where a Russian former spy and his daughter were poisoned with the same chemical four months ago, prompting police to launch a murder investigation.
Dawn Sturgess, 44, died in hospital yesterday after falling ill on June 30.
Her partner Charlie Rowley, 45, who also fell ill after being exposed to the nerve agent, remains in a critical condition in hospital.
Scotland Yard said they have launched a murder investigation - the second major probe involving the nerve agent this year, following the case of Sergei Skripal and his daughter in March.
Tests have revealed that the Amesbury couple were exposed to Novichok, a nerve agent developed by the Soviet military during the Cold War in what is the first known offensive use of such a chemical weapon on European soil since World War II.
Security services believe the couple were inadvertently exposed to the same nerve agent used to attack Sergei Skripal and his daughter four months ago.
The UK government accused Russia of using British streets, parks and towns as "dumping grounds for poison" after the incident.
"This is shocking and tragic news. Dawn leaves behind her family, including three children, and our thoughts and prayers are with them at this extremely difficult time," assistant commissioner Neil Basu, head of UK counter-terrorism policing, said,