Gunman kills at least 12, including children, injures 4 in Montenegro

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Alleged gunman called police after killing ex-wife's girlfriend, police say

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Gunman kills 10 people in mass shooting in Montenegro | ABC NEWS

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Search widens for suspected gunman in killing of UnitedHealthcare CEO

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Gunman kills at least 10 people in Colorado supermarket | Nightline

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Gunman kills 5 co-workers at Louisville bank

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Police find backpack of gunman in UnitedHealthcare CEO killing

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Montenegro mourns after gunman kills 12 • FRANCE 24 English

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Masked Gunman Kills CEO on Manhattan Street #shorts

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Gunman kills five in Israeli ultra-Orthodox town

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Gunman kills four at Oklahoma hospital complex, police say • FRANCE 24 English

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Gunman shot, killed by police outside NYC church

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Inside day 2 of the manhunt for the gunman who killed UnitedHealthcare's CEO

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Gunman Kills 15 Potential Swing Voters

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Family, officials speak out after 3 killed in Mississippi gas station robbery

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Gunman kills supervisor then himself

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The latest on the manhunt for the gunman who killed UnitedHealthcare CEO

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Montenegro shooting: At least 10 people killed in a shooting after a bar fight

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Days after gunman killed UnitedHealthcare's CEO, police push to ID him and FBI offers reward

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Gunman kills at least 3 at Tulsa hospital

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