A second police officer was contaminated with Novichok during the 2018 poisonings in Salisbury, it has been revealed.
Former Russian spy Sergei Skripal and his daughter Yulia were targeted with the nerve agent in March 2018, the BBC said.
Det Sgt Nick Bailey was also contaminated with the nerve agent at the Skripal's home.
The Metropolitan Police has now confirmed the nerve agent was found in the blood sample of another officer.
The force said the Wiltshire Police officer, who does not wish to be identified, displayed signs at the time that indicated exposure to a very small amount of Novichok.
The officer received medical treatment and returned to duties shortly afterwards.
Detectives from the Counter Terrorism Policing (CTP) network said a forensic examination of the officer's blood has now confirmed that traces of Novichok were in the sample.
The officer is the sixth person to be confirmed through forensic testing as a victim of the Salisbury attack.
Mr Skripal and his daughter recovered after intensive care in hospital, and their current whereabouts are being kept secret.