An unprecedented movement in the Russian embassy was supervised by intelligence agencies, days before and after the poisoning by Novichok of the Russian spy Sergei and his daughter Yulia Skripal.

According to The Guardian, a source told the Press Association, the M15, the M16 and the GCHQ, were investigating the unusual activity during those days, on May 4, 2018.

Meanwhile, the Kremlin denied being linked to the attack and published a report in which it states that a British woman named Dawn Sturgess was contaminated with the neurotoxic agent Novichok and hospitalized in Salisbury.

The attack on Sergei Skripal and his daughter Yulia

Russian spy Sergei Skripal and his daughter Yulia collapsed after coming in contact with the novichok nerve agent, at his residence in Salisbury.

From that collapse, they recovered, but in their place, Dawn Sturgess died, after exposing himself to the novichok that was contained in a bottle of perfume, which was found by his companion Charlie Rowley.

From the beginning, the United Kingdom has accused Russia of being behind this attack, leading to Theresa May taking the decision to expel 23 possible Russian spies from the embassy in London, the biggest expulsion of spies since the end of the cold war.

The position of intelligence agencies

Scotland Yard and the Crown Prosecution Service reported in September that they had sufficient evidence to indict two Russians, Alexander Petrov and Anatoly Chepiga for the attempted assassination of Sergei Skripa.

Then a third suspect was identified, Denis Sergeed, all believed to belong to the Russian intelligence agency GRU. It is not ruled out that there are more suspects.

The investigation around the case continues, and in the words of the Commissioner of the Metropolitan Police, they will never surrender in their eagerness that the culprits be brought to justice.

On the other hand, just last week the work of cleaning and decontaminating the street where the attack was carried out was completed.

Even anti-terrorism officials are trying to find out where the perfume bottle was located where the novichok was, from the March attack until he was found by Charlie Rowley in June. The Home Office and the Foreign and Commonwealth Office have not commented.

Neither the Russian Embassy nor the GCHQ has refuted the Press Association report. The source warned that there might be more suspects than those already named and said the investigations were not limited to publicly known suspects.