A police spokeswoman said the boy's death was not being treated as suspicious but it was not clear if he fell into the water or went in deliberately before getting into difficulty.
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It is likely a strong legal argument could be made to justify UK air strikes against IS in Syria as well as Iraq.
Teacher Martin Goldberg's links to images of children were discovered as part of the same crackdown that exposed doctor Myles Bradbury.
A cloudy and damp start. Becoming drier and brighter this afternoon.