However, to determine the common origin of the poison can only be an autopsy Sturgess, which was made on July 17.
Wilkinson said that while Rowley had been discharged, it was a "day tinged with sadness for everyone" as they remembered Sturgess.
John Glen, the Conservative MP for Salisbury, said he hoped the continuing police investigation would not only lead to the perpetrators of the attack being brought to justice, but also reassure residents who have had to endure two chemical weapon attacks on their doorstep.
Josh Harris, 28, who stayed with Ms Sturgess at the John Baker House hostel in the city, said: "They showed me a picture of a man and asked me if I had ever seen him in the city and if so, where".
"They [the investigators] are sure they [the suspects] are Russian", said the source, adding security camera images had been cross checked with records of people who entered the country.
Neil Basu, the Met Police's assistant commissioner for specialist operations, said earlier this month his officers were working on the theory that Sturgess and Rowley had found a container housing the substance.
British police examining CCTV footage have reportedly identified multiple Russian suspects believed to have carried out the March nerve-agent attack on former spy Sergei Skripal and his daughter. Britain has blamed Russian Federation for poisoning the spy and his daughter, who both recovered, as well as accidently poisoning the two other Britons.
Borussia Dortmund beat Manchester City in ICC opener
It was really good for their futures because we played one of the best teams in Germany and we did many good things. Manchester City will begin their league title defence against Arsenal at the Emirates Stadium on August 12.
Novichok victim Charlie Rowley has been released from hospital.
The world came to know Viktoria Skripal when she applied for a British visa, seeking to visit her uncle Sergei and cousin Yulia after they had allegedly been poisoned by a nerve agent in Salisbury, but was denied.
"Charlie Rowley, 45, who was also exposed to the substance, remains in a critical condition in hospital, police said".
Teams of specialist officers are continuing their forensic search for traces of novichok at Queen Elizabeth Gardens in Salisbury.
Russian Federation has strongly denied involvement in the Skripal attack, sparking a row that has led to tit-for-tat diplomatic expulsions between Britain and its allies and Moscow.
Rowley's brother Matthew told the BBC that the 45-year-old had told him the Novichok was contained in a perfume bottle.