Police in Britain said Tuesday they have enough evidence to charge a third Russian in the 2018 nerve agent attack against a former Russian spy in the city of Salisbury, England.

Authorities identified the third suspect as Sergey Fedotov, also known as Denis Sergeev, and said he was a member of Russia’s GRU military intelligence service.

They said the list of possible charges includes conspiracy to murder, attempted murder, possessing and using a chemical weapon, and causing grievous bodily harm.

Prosecutors have already charged two other suspected military intelligence members in the attack that used the nerve agent Novichok to target Sergei Skripal and his daughter, Yulia, who both survived.

A British woman later died from contact with the nerve agent, and a police officer became critically ill.

Russia has denied involvement in the attack.

In a separate development Tuesday, the European Court of Human Rights ruled that Russia was responsible for the 2006 killing of former agent Alexander Litvinenko.

Litvinenko died after drinking tea at a London hotel laced with Polonium 210, a rare radioactive isotope.

Kremlin spokesman Dmitry Peskov rejected the court’s conclusion Tuesday, calling the ruling unfounded.