Investigators spent the day at the home of 20-year-old Adam Lanza, sweeping the entire house for any evidence of a motive behind his rampage that killed 20 children and seven adults, including his own mother.
Vance: Lanza house had capacity to lock up guns
There are also new details about Nancy Lanza's whereabouts in the days right before the shooting.
CNN's Deborah Feyerick is OutFront with the latest.
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