"Alexander Petrov" and "Ruslan Boshirov" who are accused of an attack on the Skripals / REUTERS

An investigative website has said it is planning to release the true identity of the second man accused of poisoning Sergei Skripal with deadly Novichok.

Bellingcat will reveal the information about the Salisbury attack during a meeting in the UK Parliament, according to an advert posted online, Mirror Online reported.

The Parliament meeting is scheduled for October 9, the advert said.

Видео дня

The website already claims to have unmasked Ruslan Boshirov, one of two men named by the UK as suspected of poisoning the Skripals, as a decorated Russian colonel.

Read alsoAvakov: One of Salisbury poisoning suspects identified as participant in Yanukovych's escape

But the true identity of his alleged accomplice Alexander Petrov had remained a mystery.

The public meeting is being hosted on Tuesday by Isle of Wight Tory MP Bob Seely, a member of the Commons Foreign Affairs Committee.

It was advertised online today with the title "Announcement of the Identity of Second Skripal Suspect". The advert said it would be held in a House of Commons committee room.

It was not immediately clear whether Bellingcat already had the information, and if so, why it was waiting four days to publish it. Parliament only resumes sitting on Tuesday.