Police: Ore. mall shooter didn't know 2 he killed

CORRECTS LOCATION OF MALL - Onlookers observe the scene outside Clackamas Town Center in Portland, Ore., where a shooting occurred Tuesday, Dec. 11, 2012. A gunman opened fire in the Portland, Ore., area shopping mall Tuesday, killing at least one person  Photo by MBO
CORRECTS LOCATION OF MALL - Onlookers observe the scene outside Clackamas Town Center in Portland, Ore., where a shooting occurred Tuesday, Dec. 11, 2012. A gunman opened fire in the Portland, Ore., area shopping mall Tuesday, killing at least one person Photo by MBO
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