Police officers are hunting two men who called at a house in Sheffield and made threats while brandishing a knife.
South Yorkshire Police said they called at a house on Hucklow Road, Firth Park, at 5.10pm on Monday and made 'threats of physical harm' to the occupier who opened the door to them.
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No other details have yet been released.
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Witnesses or anyone with information should call South Yorkshire Police on 101.