Police responded to a call of a person down around 5:30 a.m. on 90th and Bancroft Avenue.
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They say the man was injured and suffered blunt force trauma.
Investigators say the injuries do not appear to be the result of a traffic accident.
Anyone with information is asked to contact the Homicide Section at (510) 238-3821 or the TIP LINE at 238-7950.
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