- Video report by ITV News Presenter Julie Etchingham
Home Secretary Amber Rudd has said that the attack in London did not mean intelligence services had failed, saying it was "far too early" to understand the full picture of what happened and why.
Speaking to Julie Etchingham for a special edition of ITV's Tonight programme, Ms Rudd said: "This hasn't come as a complete surprise. We've been getting ready for this for a number of years."
She said that the attacker, Khalid Masood, was involved in a "historic" case, and therefore was not actively monitored.
"Intelligence services are working hard to put together the whole picture, but I would caution drawing conclusions yet," she added. "I would wait and see what comes forward from the intelligence that's going on now."
She added that it "seems likely" that he was radicalised online.
"We know there's an onslaught of radicalisation online, there's so much information that tries to go out as propaganda to persuade people to take this sort of action."
The Home Secretary said that she didn't think lone wolf incidents were "impossible" to stop, and said intelligence services were "aware that this kind of attack can take place".
"I think as we find out more about the intelligence we'll be able to find out where we might have been able to do more, we are living in a time where there are terrorists who will want to do this sort of action, and we have to be aware of that."
She refused to be drawn on what further information intelligence services had about the attacker, saying they were still investigating whether he was part of a network.
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