The police excluded the possibility of poisoning of the visitors by nerve agent "Novichok". The law enforcers continue to check the possibility of the intentional poisoning of the suffered couple – a man and woman in the age of 30-40 years.
"Although we were able to rule out the presence of Novichok quickly, tests are ongoing to understand what, if anything, the pair have come into contact with which may have caused them to fall unwell," Detective Sergeant Jonathan Davies-Bateman said.
Earlier the man and woman reported on the bad feeling after the visit of Italian restaurant Prezzo in Salisbury.
As we reported the Crown Prosecution Service of the U.K. called the names of the suspects in the poisoning of the ex-GRU officer Sergey Skripal and his daughter Yulia. The police suspect Russians Alexander Petrov and Ruslan Bashirov. They are accused of the poisoning of Skripals, a police officer who participated in the investigation and two citizens of the U.K. poisoned in Amesbury.
Later it was reported that there could be four more suspects in the Skripals case - apart from Aleksandr Petrov and Ruslan Boshyrov, whose names were revealed by the British counter-intelligence.
As it was reported Sergei Skripal and his daughter Yulia were poisoned in British Salisbury. Later, Theresa May, British PM, stated that Russia was responsible for that, and the investigation has confirmed the use of the Novichok nerve agent, which is produced in Russia.