The shooting death of an unarmed teenager has a Missouri community up in arms, officials say. 

CNN reports that Michael Brown, 18, was fatally shot by a police officer in Ferguson, Mo. yesterday afternoon while walking in the street with at least one other teenager. According to KTVI, witnesses say a Ferguson Police officer pulled up in a cruiser and instructed them to walk on the sidewalk. Following a brief conversation, the officer reportedly opened fire. Witnesses claim it was "unprovoked": 

After an exchange of words, the officer shot Brown even after he raised his hands in the air, Johnson said. The police chief declined to comment on what preceded the shooting and other specifics of the case.

CNN adds that Brown, a recent high school graduate, was spending the summer with his grandmother. His killing triggered protests, as hundreds of infuriated residents flocked to the scene.

Ferguson Police Chief Thomas Jackson has requested that the St. Louis County Police Department launch their own investigation, and the department is expected to release more information about the shooting today. 

News One adds that a local NAACP chapter has called for a federal investigation. Meanwhile, protesters have congregated outside of the Ferguson Police headquarters: 

[via CNN and News One]

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