Regarding tweets to @tomdaley1994 - 17-year-old man arrested this morning at a guest house in the Weymouth area. Enquiries continue.
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London Paddington, which serves around 100,000 passengers each day, was almost deserted for much of Wednesday.
In the the op-ed, he warned governments in the Middle East “have been given free rein to continue silencing the media”.
The anonymous artist said the prank had worked “every time” in rehearsals.