This tweet, believed to be from a 17-year-old Liverpool fan, allegedly targeted Newcastle United defender James Perch after the two sides met on Sunday.
A call about the abuse James Perch allegedly received was made to Northumbria Police, but because the complainant was from County Durham, officers from that force will take up the issue.
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Accompanied by the Duke of Edinburgh, the Queen will attend the opening ceremony of the fifth session in the Holyrood chamber.
Ms Leadsom has received the backing of Ian Duncan Smith, the former work and pensions secretary.
The former shadow work and pensions secretary is considered a more viable candidate than Angela Eagle, a Labour source has told ITV News.