Teenage Gunmen Open Fire on San Diego Mosque, Killing 3 Men and Themselves // TRAIN BRAIN

Teenage Gunmen Open Fire on San Diego Mosque, Killing 3 Men and Themselves

Two teenage shooters opened fire at a San Diego mosque on Monday and killed three men — then killed themselves a few blocks away — in an attack police are investigating as a hate crime. NBC News national correspondent Morgan Chesky reports for TODAY.

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Teenage Gunmen Open Fire on San Diego Mosque, Killing 3 Men and Themselves