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The account has posted a step-by-step diagram describing the brutal attacks which unfolded in the capital city. At least five people are dead and more are suffering from “catastrophic injuries”, medics at St Thomas’ hospital have reported. Scotland Yard's top anti-terror officer Mark Rowley confirmed 40 people had been injured. While ISIS has not claimed responsibility for the attacks, Ahmet Yayla, professor of Criminology and Former Counterterrorism Police Chief in Turkey, is relaying updates from ISIS’ telegram, an encrypted messaging service. Mr Yayla has reported the ISIS account is: “Cheering for the #Westminster #Westmattack and posted the scheme for the attack. #London #ISIS.”

EPA/TWITTER Westminster station, which faces parliament, was evacuated

He added: “This is the same account that posted the Istanbul #Reinaclub attack video. “However, there are no official claims of the #Westminster attack.” Speaking to Express.co.uk, he said: “In these posts he is stated as a person who invites people to Islam, not as an isis member. “So far the official isis channels have not claimed the attack even though several of their channels are praising the attack.

Recent posts of a prominent #ISIS telegram channel. Reads the blessed #London attack.. This is not an official account but very credible. pic.twitter.com/tTSyc2ZrJx — Ahmet S Yayla (@ahmetsyayla) March 22, 2017

“So, we can not rule out this as an isis attack. “I think they will post something about the attack but we need to wait and see “You also should understand that isis has openly targeted the uk in the past but that doesn't mean it is an isis attack.” The Met Police have called the shocking events a terror attack. LONDON TERROR ATTACKS - LIVE UPDATES

REUTERS Londoners are still reeling following the deadly attacks on Wednesday

So far two people have been confirmed dead, and a statement issued by officers said: “We know there are number of casualties including police officers but cannot confirm number or nature of injures.” A car ploughed into 12 pedestrians on Westminster bridge just before 3pm on Wednesday afternoon, before carrying on to parliament where it is thought more people were injured as the car crashed into the perimeter fence. A knifeman, thought to be the driver or passenger, made their way into Old Palace Yard before attacking a police officer.

They were then shot by armed officers. Parliament was put into lockdown and business suspended. MPs are still thought to be inside the Thames front building. Westminster station, which faces parliament, was evacuated and the police have warned people to stay away from key London landmarks such as Parliament Square and Whitehall.