Kremlin 'behind hoax call' targeting Foreign Secretary Boris Johnson

Britain believes the Kremlin was behind a hoax call targeting Foreign Secretary Boris Johnson.

Russian pranksters pretended to be the Armenian prime minister in a call to Mr Johnson, during which he discussed the UK's relationship with Moscow and the nerve agent attack on former spy Sergei Skripal and his daughter Yulia.

Pranksters Alexei Stolyarov and Vladimir Kuznetsov - known as Lexus and Vovan - have claimed a series of high-profile victims including politicians and Sir Elton John.

Critics claim they have links to the Russian security services.

The Guardian reported that during the 18-minute call one of the pair pretended to be Armenian PM Nikol Pashinyan.

Mr Johnson congratulated him on his "remarkable success" and said:

Asked whether he was sure Vladimir Putin's Russia ordered the Salisbury nerve agent attack on the Skripals, Mr Johnson said:

A Foreign Office spokesman said:

Downing Street said there would be a "Whitehall investigation" into how the caller was able to get through to the Foreign Secretary.