After a man was arrested in connection with abusive tweets sent to feminist campaigner Caroline Criado Perez, she tweeted:
Just at the police station now about to make a formal statement. There are many more threats to report. #shoutingback
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Six people have been killed and a seventh is critically injured after a multi-vehicle crash in Birmingham in the early hours of Sunday.
It will be a frosty start for many across the UK with slow-clearing mist and fog across parts of central and southeastern England.
The prime minister says she has proven the "doubters" wrong but still faces opposition from both sides of the Brexit line.