Greater Manchester Police is due to hold a news conference at 12:10pm.
It is expected that further details will be revealed of an arrest made in connection with an offensive Facebook page set up following the deaths of PC Fiona Bone and PC Nicola Hughes.
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Jeremy Corbyn is writing to the Parliamentary Labour Party to say he cannot back airstrikes on Syria, ITV News understands.
Rows of students stood and turned their backs before filing out of the lecture theatre.
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