All flights in and out of Karachi airport have been suspended, a Pakistani official has told Reuters.
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ITV News understands that the prime minister is preparing to make a major climbdown at PMQs on the issue of refugee children.
The parents of missing Madeleine McCann have said "there will always be hope" in the hunt for their daughter.
The boy was attacked on a bus in south London. Police say he was stabbed in the stomach.