National Police Lead for Counter Terrorism, Mark Rowley (pictured), has revealed several murderous terror plots have been foiled this year Britain has foiled several murderous terror plots this year while counter-terrorism chiefs are grappling with 'exceptionally high' numbers of investigations, it has been revealed. The scale of the deadly threat police are facing has been laid bare by Scotland Yard Assistant Commissioner Mark Rowley amid heightened fears over the influence of extremist group Islamic State. The National Police Lead for Counter Terrorism revealed details of how hundreds of suspected terrorists have been arrested so far this year. Officers are also taking down more than a thousand pieces of extremist material from the internet per week, including videos of beheadings, torture and suicides.
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Hundreds of terror suspects arrested this year, police chief has revealed
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Scotland Yard Assistant Commissioner Mark Rowley reveals deadly threat faced by police
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Several murderous terror plots have been foiled in the last 12 months
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Counter-terrorism bosses dealing with 'extremely high' number of investigations
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Officers taking down a thousand pieces of extremist material from internet every week
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It comes amid heightened fears over influence of extremist group Islamic State
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Foreign Secretary Philip Hammond suggests British jihadists who go to fight in Iraq or Syria could be tried for treason
The senior officer's comments came after Scotland Yard made a series of arrests over an alleged 'significant' plot cooked up by suspects including at least one man who was believed to have travelled to @placeholder.