June 30 - Dawn Sturgess and Charlie Rowley fall ill at a property in Amesbury, which is eight miles from Salisbury, and are rushed to hospital.
Claiming that the substance used in the attack had been a Novichok-class nerve agent developed in the Soviet Union, London rushed to accuse Russian Federation of being involved in the incident.
The 45-year-old man who was hospitalised following a Novichok attack in England has been discharged from hospital.
'We don't know yet if he had direct contact with the nerve agent like Dawn appears to have done or whether it was after he had touched her.
The nursing director said "many people" had come to the hospital concerned about possible exposure to Novichok but that only the five victims already identified had been exposed to the lethal nerve agent. He was freed in a spy swap in 2010 and settled in the UK.
Park, where the restrooms are located, have suffered from Rookie Charlie Rowley and don Sturges visited during a walk.
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Ms Sturgess lived in Salisbury, and the couple had been in the city before going to Mr Rowley's flat in nearby Amesbury on Friday 29 June.
April 5, morning - Yulia Skripal's cousin Viktoria says she has received a call from Yulia saying she plans to leave hospital soon.
Wiltshire Police Chief Constable Kier Pritchard said: "On behalf of all my officers, staff and volunteers, we welcome today's news that Charlie Rowley has been discharged from Salisbury District hospital".
The mother-of-one died in Salisbury District Hospital on July 8 after battling for life for nine days in intensive care. The father and daughter have since been moved to a safe location for their protection.
A coroner on Thursday opened an inquest into the death of a British woman who was exposed to Novichok, as British media reported that police may have identified suspects in an earlier attack on a former Russian spy using the same deadly nerve agent. Britain has blamed Russian Federation for poisoning the spy and his daughter, who both recovered after lengthy hospitalizations, as well as accidentally poisoning Rowley, Sturgess and a police officer who aided the Skripals.
July 10 - Mr Rowley regains consciousness at hospital, and later tells his brother that Dawn had sprayed the Novichok onto her wrists. British police believe that the cases are linked.