Met joins hunt for gunman
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Metropolitan Police detectives join the hunt for a man who threatened a police officer with a gun in Oxfordshire.
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Police chiefs have sought to reassure Londoners after a third fatal shooting in less than two weeks in the south of the city, fuelling fears over escalating gun culture in the capital.
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US police are hunting a gunman after two students were shot at a university in Delaware state, officials say.
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Police say a man is helping them with inquiries over the shooting of an Australian peacekeeper in the Solomons.
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Police are hunting a gunman who shot two teenagers at a packed McDonald's restaurant in south London.
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A motive is sought for a gun attack on a house in County Armagh in which three people escape injury.
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_ A search continued Sunday for a man who police said shot and killed his estranged wife in front of their three children, then fled with the children.
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Police were searching Sunday for a National Guardsman with sniper training who they suspect shot his wife to death while she sang with a band in a restaurant and bar.
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Police in Phoenix, Arizona, appealed Sunday for help in finding a 24-year-old man known as "Psycho" who is a suspect in Saturday's shootings of six people and a dog.
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British anti-terror detectives were hunting on Monday for more members of a suspected militant cell who rammed a burning jeep into a Scottish airport and tried to detonate two car bombs in central London.
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Police chiefs have called an urgent meeting after the third fatal shooting of a teenager in London in less than two weeks, fueling mounting fears over gun culture in the capital.
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Authorities have launched a manhunt across the Northeast for four Chinese nationals described by the FBI as potential terror suspects who may be heading for Boston.
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State troopers launched a widescale manhunt today in western New York for a prison escapee suspected of ambushing two troopers on Thursday evening.
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British anti-terror detectives were  hunting on Monday for more members of a suspected militant cell  who rammed a burning jeep into a Scottish airport and tried to  detonate two car bombs in central London.
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British security officials hunting for Margaret Hassan are trying to contact the intermediary who acted as the conduit with Abu Musab al-Zarqawi&#39;s group during the kidnapping of Kenneth Bigley.
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The Met's former top anti-terror officer will be given "advice" over the Jean Charles de Menezes shooting.
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Police are trying to identify a man found shot dead near a church close to the border in Donegal.