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In London, three passers-by were hospitalized in the hospital after being doused unknown "toxic substance".

As reported BBC citing the police, the three victims, 17, 22 and 27 years found on the street in the Kingsland area of Hackney in North East London and taken to a hospital.

The G7 Foreign Ministers endorsed the UK position that Russia was "highly likely" responsible for the poisoning of former Russian intelligence officer Sergei Skripal and his daughter Yulia in the United Kingdom, reports Sputnik.

Three Belgian companies are facing prosecution for allegedly exporting a chemical that can be used to make the deadly nerve agent sarin to Syria, in breach of international sanctions, officials said on April 18.

Yulia Skripal has been discharged from hospital more than a month since she was poisoned along with her father, a former Russian spy, with a military-grade nerve agent, the English hospital where they are being treated said.

Yulia Skripal has been discharged from a British hospital, the BBC reported on Tuesday, just over a month after being poisoned with a nerve agent along with her father Sergei, a former Russian double agent, quoted by Reuters.

Russia's ambassador to the United Nations has warned British officials they are "playing with fire" and will be "sorry" over their response to the poisoning of a former double agent and his daughter in Salisbury, Independent reported.

Yulia Skripal was poisoned with a nerve agent just days after gaining access to a £150,000 'secret bank account' with proceeds from a house sale in Britain, it has emerged.

The money had belonged to her brother Alexander who died in mysterious circumstances in St Petersburg last year.

 Yulia Skripal, the daughter of ex-spy Sergei Skripal, is improving rapidly and no longer in a critical condition, says the hospital treating her. 

She and her father were admitted nearly four weeks ago after being exposed to a nerve agent in Salisbury.

''Bulgaria, which has a strong pro-Russian lobby in government, needs more time to decide whether to follow NATO and EU allies in expelling Russian diplomats over a nerve agent attack on a former Russian spy'', its deputy prime minister said on Thursday, Reuters reported.

This is a coordinated response to the attack on the spy Sergei Skripal.

The EU was joined by the US, Canada. Australia, but also some other, non-EU European states such as Macedonia and Moldova.