UK Prime Minister Boris Johnson has said he is "deeply concerned" about violence in Northern Ireland.
Police have been attacked, petrol bombs thrown and a bus set on fire on a sixth night of disorder in Belfast.
Reporter Amanda Ferguson is in the city and says the causes of the violence are complex.
IN: There's been
OUT: complicated picture
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Reporter Amanda Ferguson is in the city and says the situation is getting worse
IN: It really is
OUT: wants to see
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