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Gunfire erupted in front of a grocery store at the corner of Telegraph Avenue and 31st street at 7:45 p.m.
Three people were wounded, and two of the victims died at the scene.
The third person was driven to a nearby hospital with non life-threatening injuries.
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45 minutes later, police were called to the intersection of East 20th Street and 23rd Avenue in East Oakland.
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There they found a person suffering from a gunshot wound on the sidewalk.
Paramedics pronounced the victim dead at the scene.
Police say homicide investigators are investigating both shootings.