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In 1998, he became chief constable of Surrey Police before returning to the Met two years later as deputy commissioner.

Assistant Chief Constable Mark Sutherland of Police Scotland said violence of any kind was entirely unacceptable.

Deputy Chief Constable Alan Speirs told the BBC that a visit would not "come at the expense" of Scotland's communities.

"It will look closely at the information sharing processes and how the organisations collaborated," said assistant chief constable Alice Scott.

Police Scotland Assistant chief constable Emma Bond said: "Planning is under way for a potential visit to Scotland later this month."